diff --git a/XLAB/MainWindow.xaml b/XLAB/MainWindow.xaml
index 8e70539..1dcf9ea 100644
--- a/XLAB/MainWindow.xaml
+++ b/XLAB/MainWindow.xaml
@@ -192,15 +192,33 @@
                               SelectedItem="{Binding SelectedDocumentGroup, Mode=TwoWay}"
                               AutoGenerateColumns="False"
                               CanUserAddRows="False"
-                              IsReadOnly="True"
+                              IsReadOnly="False"
                               HeadersVisibility="Column">
                         <DataGrid.ContextMenu>
                             <ContextMenu DataContext="{Binding PlacementTarget.DataContext, RelativeSource={RelativeSource Self}}">
-                                <MenuItem Header="Выбрать по заводским номерам"
+                                <MenuItem Header="Добавить по заводским номерам"
                                           Command="{Binding OpenInstrumentPickerCommand}" />
+                                <MenuItem Header="Удалить"
+                                          Command="{Binding DeleteSelectedGroupsCommand}" />
                             </ContextMenu>
                         </DataGrid.ContextMenu>
+                        <DataGrid.RowStyle>
+                            <Style TargetType="DataGridRow">
+                                <EventSetter Event="PreviewMouseRightButtonDown"
+                                             Handler="DocumentGroupRow_PreviewMouseRightButtonDown" />
+                            </Style>
+                        </DataGrid.RowStyle>
                         <DataGrid.Columns>
+                            <DataGridTemplateColumn Header="Выбр."
+                                                    Width="52">
+                                <DataGridTemplateColumn.CellTemplate>
+                                    <DataTemplate>
+                                        <CheckBox HorizontalAlignment="Center"
+                                                  VerticalAlignment="Center"
+                                                  IsChecked="{Binding IsBatchSelected, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" />
+                                    </DataTemplate>
+                                </DataGridTemplateColumn.CellTemplate>
+                            </DataGridTemplateColumn>
                             <DataGridTextColumn Header="Тип"
                                                 Width="180"
                                                 Binding="{Binding InstrumentType}" />
@@ -268,6 +286,16 @@
                             </Style>
                         </DataGrid.RowStyle>
                         <DataGrid.Columns>
+                            <DataGridTemplateColumn Header="Выбр."
+                                                    Width="52">
+                                <DataGridTemplateColumn.CellTemplate>
+                                    <DataTemplate>
+                                        <CheckBox HorizontalAlignment="Center"
+                                                  VerticalAlignment="Center"
+                                                  IsChecked="{Binding IsBatchSelected, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" />
+                                    </DataTemplate>
+                                </DataGridTemplateColumn.CellTemplate>
+                            </DataGridTemplateColumn>
                             <DataGridTextColumn Header="Зав. №"
                                                 Width="120"
                                                 Binding="{Binding SerialNumber}" />
diff --git a/XLAB/MainWindow.xaml.cs b/XLAB/MainWindow.xaml.cs
index 28750d7..20c7621 100644
--- a/XLAB/MainWindow.xaml.cs
+++ b/XLAB/MainWindow.xaml.cs
@@ -35,6 +35,16 @@ namespace XLAB
             }
         }
 
+        private void DocumentGroupRow_PreviewMouseRightButtonDown(object sender, MouseButtonEventArgs e)
+        {
+            var row = sender as DataGridRow;
+            if (row != null)
+            {
+                row.IsSelected = true;
+                row.Focus();
+            }
+        }
+
         private async void Window_Loaded(object sender, RoutedEventArgs e)
         {
             await _viewModel.InitializeAsync();
diff --git a/XLAB/MainWindowViewModel.cs b/XLAB/MainWindowViewModel.cs
index 7ff1c31..c75341f 100644
--- a/XLAB/MainWindowViewModel.cs
+++ b/XLAB/MainWindowViewModel.cs
@@ -49,6 +49,7 @@ namespace XLAB
 
             AddDocumentCommand = new RelayCommand(delegate { AddDocument(); }, delegate { return !IsBusy; });
             DeleteDocumentCommand = new RelayCommand(delegate { DeleteDocumentAsync(); }, delegate { return !IsBusy && SelectedDocument != null; });
+            DeleteSelectedGroupsCommand = new RelayCommand(delegate { DeleteSelectedGroupsAsync(); }, delegate { return CanDeleteSelectedGroups(); });
             MarkLinePassedCommand = new RelayCommand(delegate { EditLineVerificationAsync(true); }, delegate { return CanEditSelectedLineVerification(); });
             MarkLineRejectedCommand = new RelayCommand(delegate { EditLineVerificationAsync(false); }, delegate { return CanEditSelectedLineVerification(); });
             OpenInstrumentPickerCommand = new RelayCommand(delegate { OpenInstrumentPickerAsync(); }, delegate { return !IsBusy && SelectedDocument != null && SelectedDocument.CustomerId.HasValue; });
@@ -100,6 +101,8 @@ namespace XLAB
 
         public ICommand DeleteDocumentCommand { get; private set; }
 
+        public ICommand DeleteSelectedGroupsCommand { get; private set; }
+
         public string GroupDetailFilterText
         {
             get { return _groupDetailFilterText; }
@@ -312,18 +315,27 @@ namespace XLAB
             return GetPendingLines(SelectedDocument).Count > 0;
         }
 
-        private bool CanEditSelectedLineVerification()
+        private bool CanDeleteSelectedGroups()
         {
             return !IsBusy
-                   && SelectedDocumentLine != null
-                   && !HasVerificationData(SelectedDocumentLine);
+                   && SelectedDocument != null
+                   && GetDeleteTargetGroups().Count > 0;
+        }
+
+        private bool CanEditSelectedLineVerification()
+        {
+            var targetLines = GetVerificationTargetLines();
+            return !IsBusy
+                   && targetLines.Count > 0
+                   && targetLines.All(delegate(PsvDocumentLine line) { return !HasVerificationData(line); });
         }
 
         private bool CanResetSelectedLineVerification()
         {
+            var targetLines = GetVerificationTargetLines();
             return !IsBusy
-                   && SelectedDocumentLine != null
-                   && HasVerificationData(SelectedDocumentLine);
+                   && targetLines.Count > 0
+                   && targetLines.All(HasVerificationData);
         }
 
         private static bool HasVerificationData(PsvDocumentLine line)
@@ -340,11 +352,131 @@ namespace XLAB
                        || !string.IsNullOrWhiteSpace(line.RejectionReason));
         }
 
+        private List<PsvDocumentLine> GetCheckedDocumentLines()
+        {
+            return DocumentLinesView.Cast<object>()
+                .OfType<PsvDocumentLine>()
+                .Where(delegate(PsvDocumentLine line) { return line.IsBatchSelected; })
+                .ToList();
+        }
+
+        private List<PsvDocumentGroupSummary> GetCheckedDocumentGroups()
+        {
+            return DocumentGroupSummaries
+                .Where(delegate(PsvDocumentGroupSummary group) { return group.IsBatchSelected; })
+                .ToList();
+        }
+
+        private List<PsvDocumentGroupSummary> GetDeleteTargetGroups()
+        {
+            var checkedGroups = GetCheckedDocumentGroups();
+            if (checkedGroups.Count > 0)
+            {
+                return checkedGroups;
+            }
+
+            return SelectedDocumentGroup == null
+                ? new List<PsvDocumentGroupSummary>()
+                : new List<PsvDocumentGroupSummary> { SelectedDocumentGroup };
+        }
+
+        private List<PsvDocumentLine> GetVerificationTargetLines()
+        {
+            var checkedLines = GetCheckedDocumentLines();
+            if (checkedLines.Count > 0)
+            {
+                return checkedLines;
+            }
+
+            return SelectedDocumentLine == null
+                ? new List<PsvDocumentLine>()
+                : new List<PsvDocumentLine> { SelectedDocumentLine };
+        }
+
         private void ClearCollections<T>(ObservableCollection<T> collection)
         {
             collection.Clear();
         }
 
+        private void ClearDocumentLines()
+        {
+            foreach (var line in DocumentLines.ToList())
+            {
+                UnsubscribeFromDocumentLine(line);
+            }
+
+            ClearCollections(DocumentLines);
+        }
+
+        private void ClearDocumentGroups()
+        {
+            foreach (var group in DocumentGroupSummaries.ToList())
+            {
+                UnsubscribeFromDocumentGroup(group);
+            }
+
+            ClearCollections(DocumentGroupSummaries);
+        }
+
+        private void SubscribeToDocumentLine(PsvDocumentLine line)
+        {
+            if (line == null)
+            {
+                return;
+            }
+
+            line.PropertyChanged -= DocumentLine_PropertyChanged;
+            line.PropertyChanged += DocumentLine_PropertyChanged;
+        }
+
+        private void SubscribeToDocumentGroup(PsvDocumentGroupSummary group)
+        {
+            if (group == null)
+            {
+                return;
+            }
+
+            group.PropertyChanged -= DocumentGroup_PropertyChanged;
+            group.PropertyChanged += DocumentGroup_PropertyChanged;
+        }
+
+        private void UnsubscribeFromDocumentLine(PsvDocumentLine line)
+        {
+            if (line == null)
+            {
+                return;
+            }
+
+            line.PropertyChanged -= DocumentLine_PropertyChanged;
+        }
+
+        private void UnsubscribeFromDocumentGroup(PsvDocumentGroupSummary group)
+        {
+            if (group == null)
+            {
+                return;
+            }
+
+            group.PropertyChanged -= DocumentGroup_PropertyChanged;
+        }
+
+        private void DocumentLine_PropertyChanged(object sender, PropertyChangedEventArgs e)
+        {
+            if (string.Equals(e.PropertyName, "IsBatchSelected", StringComparison.Ordinal))
+            {
+                UpdateLineStatus();
+                RaiseCommandStates();
+            }
+        }
+
+        private void DocumentGroup_PropertyChanged(object sender, PropertyChangedEventArgs e)
+        {
+            if (string.Equals(e.PropertyName, "IsBatchSelected", StringComparison.Ordinal))
+            {
+                RaiseCommandStates();
+            }
+        }
+
         private void ClearHeader()
         {
             DocumentNumberEditor = string.Empty;
@@ -415,7 +547,7 @@ namespace XLAB
             };
         }
 
-        private void ApplyVerificationResultToLine(PsvDocumentLine line, VerificationEditResult result)
+        private static void ApplyVerificationResultCore(PsvDocumentLine line, VerificationEditResult result)
         {
             if (line == null || result == null)
             {
@@ -432,11 +564,15 @@ namespace XLAB
             line.VerificationDocumentNumber = result.VerificationDocumentNumber;
             line.VerificationDocumentDate = result.VerificationDate;
             line.RejectionReason = result.IsPassed ? string.Empty : result.RejectionReason;
+        }
 
+        private void ApplyVerificationResultToLine(PsvDocumentLine line, VerificationEditResult result)
+        {
+            ApplyVerificationResultCore(line, result);
             RefreshAfterLineVerificationChanged(line);
         }
 
-        private void ClearVerificationFromLine(PsvDocumentLine line)
+        private static void ClearVerificationFromLineCore(PsvDocumentLine line)
         {
             if (line == null)
             {
@@ -453,22 +589,26 @@ namespace XLAB
             line.VerificationDocumentNumber = string.Empty;
             line.VerificationDocumentDate = null;
             line.RejectionReason = string.Empty;
+        }
 
+        private void ClearVerificationFromLine(PsvDocumentLine line)
+        {
+            ClearVerificationFromLineCore(line);
             RefreshAfterLineVerificationChanged(line);
         }
 
         private void EditLineVerificationAsync(bool isPassed)
         {
-            var line = SelectedDocumentLine;
-            if (line == null)
+            var targetLines = GetVerificationTargetLines();
+            if (targetLines.Count == 0)
             {
                 return;
             }
 
-            EditLineVerificationCoreAsync(line, isPassed);
+            EditLineVerificationCoreAsync(targetLines, isPassed);
         }
 
-        private async void EditLineVerificationCoreAsync(PsvDocumentLine line, bool isPassed)
+        private async void EditLineVerificationCoreAsync(IReadOnlyList<PsvDocumentLine> targetLines, bool isPassed)
         {
             IReadOnlyList<DocumentFormReference> documentForms;
             IReadOnlyList<PersonReference> verifiers;
@@ -489,22 +629,41 @@ namespace XLAB
                 IsBusy = false;
             }
 
-            var seed = CreateVerificationSeed(line, isPassed, documentForms);
+            var seed = CreateVerificationSeed(targetLines[0], isPassed, documentForms);
             var result = _dialogService.ShowVerificationDialog(seed, verifiers, documentForms);
             if (result == null)
             {
                 return;
             }
 
-            if (line.IsPendingInsert)
+            var pendingLines = targetLines.Where(delegate(PsvDocumentLine line) { return line.IsPendingInsert; }).ToList();
+            var persistedCardIds = targetLines.Where(delegate(PsvDocumentLine line) { return !line.IsPendingInsert; })
+                .Select(delegate(PsvDocumentLine line) { return line.CardId; })
+                .Distinct()
+                .ToList();
+
+            if (persistedCardIds.Count == 0)
             {
-                ApplyVerificationResultToLine(line, result);
+                foreach (var pendingLine in pendingLines)
+                {
+                    ApplyVerificationResultCore(pendingLine, result);
+                    pendingLine.IsBatchSelected = false;
+                }
+
+                RefreshAfterLineVerificationChanged(targetLines[0]);
                 return;
             }
 
             RunBusyOperation(async delegate
             {
-                await Task.Run(delegate { _service.SaveLineVerification(line.CardId, result); });
+                await Task.Run(delegate { _service.SaveLineVerification(persistedCardIds, result); });
+
+                foreach (var pendingLine in pendingLines)
+                {
+                    ApplyVerificationResultCore(pendingLine, result);
+                    pendingLine.IsBatchSelected = false;
+                }
+
                 await ReloadSelectedDocumentLinesAsync();
             });
         }
@@ -516,25 +675,45 @@ namespace XLAB
             SelectedDocumentGroup = FindMatchingGroup(previousGroup) ?? DocumentGroupSummaries.FirstOrDefault();
             RefreshDocumentLinesView();
             SelectedDocumentLine = line;
+            RaiseCommandStates();
         }
 
         private void ResetSelectedLineVerificationAsync()
         {
-            var line = SelectedDocumentLine;
-            if (line == null)
+            var targetLines = GetVerificationTargetLines();
+            if (targetLines.Count == 0)
             {
                 return;
             }
 
-            if (line.IsPendingInsert)
+            var pendingLines = targetLines.Where(delegate(PsvDocumentLine line) { return line.IsPendingInsert; }).ToList();
+            var persistedCardIds = targetLines.Where(delegate(PsvDocumentLine line) { return !line.IsPendingInsert; })
+                .Select(delegate(PsvDocumentLine line) { return line.CardId; })
+                .Distinct()
+                .ToList();
+
+            if (persistedCardIds.Count == 0)
             {
-                ClearVerificationFromLine(line);
+                foreach (var pendingLine in pendingLines)
+                {
+                    ClearVerificationFromLineCore(pendingLine);
+                    pendingLine.IsBatchSelected = false;
+                }
+
+                RefreshAfterLineVerificationChanged(targetLines[0]);
                 return;
             }
 
             RunBusyOperation(async delegate
             {
-                await Task.Run(delegate { _service.ResetLineVerification(line.CardId); });
+                await Task.Run(delegate { _service.ResetLineVerification(persistedCardIds); });
+
+                foreach (var pendingLine in pendingLines)
+                {
+                    ClearVerificationFromLineCore(pendingLine);
+                    pendingLine.IsBatchSelected = false;
+                }
+
                 await ReloadSelectedDocumentLinesAsync();
             });
         }
@@ -582,6 +761,132 @@ namespace XLAB
             DocumentStatusText = string.Format("Документов: {0}.", Documents.Count);
         }
 
+        private void DeleteSelectedGroupsAsync()
+        {
+            if (SelectedDocument == null)
+            {
+                return;
+            }
+
+            var targetGroups = GetDeleteTargetGroups();
+            if (targetGroups.Count == 0)
+            {
+                return;
+            }
+
+            var targetLines = DocumentLines
+                .Where(delegate(PsvDocumentLine line)
+                {
+                    return targetGroups.Any(delegate(PsvDocumentGroupSummary group) { return group.Matches(line); });
+                })
+                .ToList();
+
+            if (targetLines.Count == 0)
+            {
+                _dialogService.ShowWarning("Для удаления не найдено строк выбранных групп.");
+                return;
+            }
+
+            if (!_dialogService.Confirm(string.Format(
+                "Удалить из ПСВ \"{0}\" групп: {1}, строк приборов: {2}?",
+                SelectedDocument.DocumentNumber,
+                targetGroups.Count,
+                targetLines.Count)))
+            {
+                return;
+            }
+
+            var selectedDocument = SelectedDocument;
+            var selectedDocumentKey = selectedDocument.DocumentKey;
+            var selectedDocumentNumber = selectedDocument.DocumentNumber;
+
+            RunBusyOperation(async delegate
+            {
+                var pendingLines = GetPendingLines(selectedDocument);
+                var pendingLinesToRemove = pendingLines
+                    .Where(delegate(PsvDocumentLine line)
+                    {
+                        return line.IsPendingInsert
+                               && targetGroups.Any(delegate(PsvDocumentGroupSummary group) { return group.Matches(line); });
+                    })
+                    .ToList();
+
+                var persistedCardIds = targetLines
+                    .Where(delegate(PsvDocumentLine line) { return !line.IsPendingInsert; })
+                    .Select(delegate(PsvDocumentLine line) { return line.CardId; })
+                    .Distinct()
+                    .ToList();
+
+                foreach (var pendingLine in pendingLinesToRemove)
+                {
+                    pendingLines.Remove(pendingLine);
+                }
+
+                var deletedPendingCount = pendingLinesToRemove.Count;
+                var deletedResult = new DocumentGroupDeleteResult();
+
+                if (persistedCardIds.Count > 0)
+                {
+                    deletedResult = await Task.Run(delegate
+                    {
+                        return _service.DeleteDocumentGroups(selectedDocumentNumber, persistedCardIds);
+                    });
+                }
+
+                var remainingPendingCount = pendingLines.Count;
+                var remainingPersistedCount = DocumentLines.Count(delegate(PsvDocumentLine line) { return !line.IsPendingInsert; }) - persistedCardIds.Count;
+
+                if (selectedDocument.IsDraft)
+                {
+                    UpdateDocumentSummaryFromLines(selectedDocument, pendingLines);
+                    ApplyDocumentLines(pendingLines, SelectedDocumentGroup);
+                    DocumentsView.Refresh();
+                    DocumentStatusText = string.Format("Документов: {0}.", Documents.Count);
+                }
+                else if (remainingPersistedCount == 0 && remainingPendingCount > 0)
+                {
+                    if (!_draftDocuments.Any(delegate(PsvDocumentSummary draft) { return draft.DocumentKey == selectedDocumentKey; }))
+                    {
+                        _draftDocuments.Add(selectedDocument);
+                    }
+
+                    selectedDocument.IsDraft = true;
+                    UpdateDocumentSummaryFromLines(selectedDocument, pendingLines);
+                    await RefreshDocumentsCoreAsync(selectedDocumentKey, selectedDocumentNumber);
+                }
+                else
+                {
+                    await RefreshDocumentsCoreAsync(selectedDocumentKey, selectedDocumentNumber);
+                }
+
+                var messages = new List<string>();
+                if (deletedPendingCount > 0)
+                {
+                    messages.Add(string.Format("Удалено черновых строк: {0}.", deletedPendingCount));
+                }
+
+                if (deletedResult.DeletedEkzMkFctvlCount > 0)
+                {
+                    messages.Add(string.Format("Удалено строк EKZMKFCTVL: {0}.", deletedResult.DeletedEkzMkFctvlCount));
+                }
+
+                if (deletedResult.DeletedEkzMkCount > 0)
+                {
+                    messages.Add(string.Format("Удалено строк EKZMK: {0}.", deletedResult.DeletedEkzMkCount));
+                }
+
+                if (deletedResult.DeletedDmsCount > 0)
+                {
+                    messages.Add(string.Format("Удалено связанных DMS: {0}.", deletedResult.DeletedDmsCount));
+                }
+
+                if (messages.Count > 0)
+                {
+                    _dialogService.ShowInfo(string.Join(" ", messages.ToArray()));
+                }
+            });
+        }
+
         private bool DocumentExistsInCollections(string documentNumber, string excludeDocumentKey)
         {
             return Documents.Any(delegate(PsvDocumentSummary document)
@@ -591,6 +896,20 @@ namespace XLAB
             });
         }
 
+        private static void UpdateDocumentSummaryFromLines(PsvDocumentSummary document, IEnumerable<PsvDocumentLine> lines)
+        {
+            if (document == null)
+            {
+                return;
+            }
+
+            var materializedLines = lines == null ? new List<PsvDocumentLine>() : lines.ToList();
+            document.ItemCount = materializedLines.Count;
+            document.PassedCount = materializedLines.Count(delegate(PsvDocumentLine line) { return line.IsPassed == true; });
+            document.FailedCount = materializedLines.Count(delegate(PsvDocumentLine line) { return line.IsPassed == false; });
+            document.IssuedCount = materializedLines.Count(delegate(PsvDocumentLine line) { return line.IssuedOn.HasValue; });
+        }
+
         private async Task ExecuteBusyOperationAsync(Func<Task> operation)
         {
             if (IsBusy)
@@ -671,12 +990,19 @@ namespace XLAB
 
             return DocumentGroupSummaries.FirstOrDefault(delegate(PsvDocumentGroupSummary current)
             {
-                return string.Equals(current.InstrumentType ?? string.Empty, group.InstrumentType ?? string.Empty, StringComparison.OrdinalIgnoreCase)
-                       && string.Equals(current.RangeText ?? string.Empty, group.RangeText ?? string.Empty, StringComparison.OrdinalIgnoreCase)
-                       && string.Equals(current.RegistryNumber ?? string.Empty, group.RegistryNumber ?? string.Empty, StringComparison.OrdinalIgnoreCase);
+                return AreSameGroup(current, group);
             });
         }
 
+        private static bool AreSameGroup(PsvDocumentGroupSummary left, PsvDocumentGroupSummary right)
+        {
+            return left != null
+                   && right != null
+                   && string.Equals(left.InstrumentType ?? string.Empty, right.InstrumentType ?? string.Empty, StringComparison.OrdinalIgnoreCase)
+                   && string.Equals(left.RangeText ?? string.Empty, right.RangeText ?? string.Empty, StringComparison.OrdinalIgnoreCase)
+                   && string.Equals(left.RegistryNumber ?? string.Empty, right.RegistryNumber ?? string.Empty, StringComparison.OrdinalIgnoreCase);
+        }
+
         private void FillHeaderFromSelection()
         {
             if (SelectedDocument == null)
@@ -731,8 +1057,8 @@ namespace XLAB
         {
             if (SelectedDocument == null)
             {
-                ClearCollections(DocumentLines);
-                ClearCollections(DocumentGroupSummaries);
+                ClearDocumentLines();
+                ClearDocumentGroups();
                 SelectedDocumentGroup = null;
                 SelectedDocumentLine = null;
                 LineStatusText = "Документ не выбран.";
@@ -753,8 +1079,8 @@ namespace XLAB
         {
             if (SelectedDocument == null)
             {
-                ClearCollections(DocumentLines);
-                ClearCollections(DocumentGroupSummaries);
+                ClearDocumentLines();
+                ClearDocumentGroups();
                 SelectedDocumentGroup = null;
                 SelectedDocumentLine = null;
                 return;
@@ -894,9 +1220,10 @@ namespace XLAB
         private void ApplyDocumentLines(IEnumerable<PsvDocumentLine> lines, PsvDocumentGroupSummary previousGroup)
         {
             var previousLine = SelectedDocumentLine;
-            ClearCollections(DocumentLines);
+            ClearDocumentLines();
             foreach (var line in lines)
             {
+                SubscribeToDocumentLine(line);
                 DocumentLines.Add(line);
             }
 
@@ -916,12 +1243,14 @@ namespace XLAB
                            && string.Equals(line.DuplicateKey, previousLine.DuplicateKey, StringComparison.OrdinalIgnoreCase);
                 });
             RefreshDocumentLinesView();
+            RaiseCommandStates();
         }
 
         private void RaiseCommandStates()
         {
             ((RelayCommand)AddDocumentCommand).RaiseCanExecuteChanged();
             ((RelayCommand)DeleteDocumentCommand).RaiseCanExecuteChanged();
+            ((RelayCommand)DeleteSelectedGroupsCommand).RaiseCanExecuteChanged();
             ((RelayCommand)MarkLinePassedCommand).RaiseCanExecuteChanged();
             ((RelayCommand)MarkLineRejectedCommand).RaiseCanExecuteChanged();
             ((RelayCommand)OpenInstrumentPickerCommand).RaiseCanExecuteChanged();
@@ -932,7 +1261,11 @@ namespace XLAB
 
         private void RebuildDocumentGroupSummaries(IEnumerable<PsvDocumentLine> lines)
         {
-            ClearCollections(DocumentGroupSummaries);
+            var checkedGroups = DocumentGroupSummaries
+                .Where(delegate(PsvDocumentGroupSummary group) { return group.IsBatchSelected; })
+                .ToList();
+
+            ClearDocumentGroups();
 
             var groups = lines.GroupBy(line => new
                 {
@@ -948,6 +1281,12 @@ namespace XLAB
                     InstrumentType = group.Key.InstrumentType,
                     RangeText = group.Key.RangeText,
                     RegistryNumber = group.Key.RegistryNumber,
+                    IsBatchSelected = checkedGroups.Any(delegate(PsvDocumentGroupSummary previous)
+                    {
+                        return string.Equals(previous.InstrumentType ?? string.Empty, group.Key.InstrumentType, StringComparison.OrdinalIgnoreCase)
+                               && string.Equals(previous.RangeText ?? string.Empty, group.Key.RangeText, StringComparison.OrdinalIgnoreCase)
+                               && string.Equals(previous.RegistryNumber ?? string.Empty, group.Key.RegistryNumber, StringComparison.OrdinalIgnoreCase);
+                    }),
                     InVerificationCount = group.Count(line => !line.IsPassed.HasValue),
                     VerifiedCount = group.Count(line => line.IsPassed.HasValue),
                     GoodCount = group.Count(line => line.IsPassed == true),
@@ -956,6 +1295,7 @@ namespace XLAB
 
             foreach (var group in groups)
             {
+                SubscribeToDocumentGroup(group);
                 DocumentGroupSummaries.Add(group);
             }
         }
@@ -964,6 +1304,7 @@ namespace XLAB
         {
             DocumentLinesView.Refresh();
             UpdateLineStatus();
+            RaiseCommandStates();
         }
 
         private void RefreshDocumentsAsync(string documentKeyToSelect, string documentNumberToSelect)
diff --git a/XLAB/PsvDataService.cs b/XLAB/PsvDataService.cs
index e07b9b2..0d402d3 100644
--- a/XLAB/PsvDataService.cs
+++ b/XLAB/PsvDataService.cs
@@ -330,7 +330,7 @@ SELECT
     CASE
         WHEN instrumentTemplate.LastDocumentNumber IS NOT NULL
              OR typeTemplate.LastDocumentNumber IS NOT NULL
-             OR periodTemplate.PeriodMonths IS NOT NULL
+             OR COALESCE(periodByInstrument.PRMK, periodByType.PRMK) IS NOT NULL
             THEN CAST(1 AS bit)
         ELSE CAST(0 AS bit)
     END AS HasTemplate,
@@ -339,6 +339,7 @@ SELECT
     CASE
         WHEN instrumentTemplate.LastDocumentNumber IS NOT NULL THEN N'История прибора'
         WHEN typeTemplate.LastDocumentNumber IS NOT NULL THEN N'Шаблон по типоразмеру'
+        WHEN COALESCE(periodByInstrument.PRMK, periodByType.PRMK) IS NOT NULL THEN N'Период из TPRMCP'
         ELSE N''
     END AS TemplateSource
 FROM dbo.EKZ z
@@ -369,21 +370,20 @@ OUTER APPLY
 OUTER APPLY
 (
     SELECT TOP (1)
-        COALESCE(periodByInstrument.PRMK, periodByType.PRMK) AS PeriodMonths
-    FROM
-    (
-        SELECT t.PRMK
-        FROM dbo.EKZMCP e
-        JOIN dbo.TPRMCP t ON t.IDTPRMCP = e.IDTPRMCP
-        WHERE e.IDEKZ = z.IDEKZ
-    ) periodByInstrument
-    FULL JOIN
-    (
-        SELECT t.PRMK
-        FROM dbo.TPRMCP t
-        WHERE t.IDTPRZ = z.IDTPRZ
-    ) periodByType ON 1 = 0
-) periodTemplate
+        t.PRMK
+    FROM dbo.EKZMCP e
+    JOIN dbo.TPRMCP t ON t.IDTPRMCP = e.IDTPRMCP
+    WHERE e.IDEKZ = z.IDEKZ
+    ORDER BY e.IDEKZMCP DESC, t.IDTPRMCP DESC
+) periodByInstrument
+OUTER APPLY
+(
+    SELECT TOP (1)
+        t.PRMK
+    FROM dbo.TPRMCP t
+    WHERE t.IDTPRZ = z.IDTPRZ
+    ORDER BY t.IDTPRMCP DESC
+) periodByType
 WHERE z.IDFRPDV = @CustomerId
 ORDER BY names.NMTP, tips.TP, sizeInfo.DPZN, z.NNZV;";
 
@@ -488,6 +488,76 @@ ORDER BY names.NMTP, tips.TP, sizeInfo.DPZN, z.NNZV;";
             }
         }
 
+        public void ResetLineVerification(IEnumerable<int> cardIds)
+        {
+            var normalizedCardIds = NormalizeCardIds(
+                cardIds,
+                "Не выбрана строка EKZMK для отмены поверки.",
+                "Не выбрано ни одной строки EKZMK для отмены поверки.");
+
+            using (var connection = CreateConnection())
+            {
+                connection.Open();
+
+                using (var transaction = connection.BeginTransaction())
+                {
+                    foreach (var cardId in normalizedCardIds)
+                    {
+                        ClearLineVerificationCore(connection, transaction, cardId);
+                        DeleteVerificationDocuments(connection, transaction, cardId);
+                    }
+
+                    transaction.Commit();
+                }
+            }
+        }
+
+        public void SaveLineVerification(IEnumerable<int> cardIds, VerificationEditResult result)
+        {
+            if (result == null)
+            {
+                throw new ArgumentNullException("result");
+            }
+
+            var normalizedCardIds = NormalizeCardIds(
+                cardIds,
+                "Не выбрана строка EKZMK для сохранения результата поверки.",
+                "Не выбрано ни одной строки EKZMK для сохранения результата поверки.");
+
+            using (var connection = CreateConnection())
+            {
+                connection.Open();
+
+                using (var transaction = connection.BeginTransaction())
+                {
+                    foreach (var cardId in normalizedCardIds)
+                    {
+                        SaveLineVerificationCore(connection, transaction, cardId, result);
+                        DeleteVerificationDocuments(connection, transaction, cardId);
+
+                        if (!string.IsNullOrWhiteSpace(result.VerificationDocumentNumber))
+                        {
+                            if (result.DocumentFormId <= 0 || result.DocumentLinkTypeId <= 0)
+                            {
+                                throw new InvalidOperationException("Для документа поверки не определена форма или связь с объектом.");
+                            }
+
+                            InsertVerificationDocument(
+                                connection,
+                                transaction,
+                                cardId,
+                                result.DocumentLinkTypeId,
+                                result.DocumentFormId,
+                                result.VerificationDocumentNumber,
+                                result.VerificationDate);
+                        }
+                    }
+
+                    transaction.Commit();
+                }
+            }
+        }
+
         public DocumentSaveResult SaveDocument(string currentDocumentNumber, DocumentEditorResult document, IEnumerable<PsvDocumentLine> pendingLines)
         {
             if (document == null)
@@ -656,6 +726,87 @@ ORDER BY names.NMTP, tips.TP, sizeInfo.DPZN, z.NNZV;";
             }
         }
 
+        public DocumentGroupDeleteResult DeleteDocumentGroups(string documentNumber, IEnumerable<int> cardIds)
+        {
+            if (string.IsNullOrWhiteSpace(documentNumber))
+            {
+                throw new InvalidOperationException("Не выбран документ для удаления групп.");
+            }
+
+            var normalizedCardIds = NormalizeCardIds(
+                cardIds,
+                "В списке удаляемых строк есть некорректный IDEKZMK.",
+                "Не выбрано ни одной строки EKZMK для удаления.");
+
+            using (var connection = CreateConnection())
+            {
+                connection.Open();
+
+                using (var transaction = connection.BeginTransaction())
+                {
+                    var blockers = LoadDeleteBlockers(connection, transaction, normalizedCardIds);
+                    if (blockers.Count > 0)
+                    {
+                        var details = string.Join(", ", blockers.Select(delegate(DeleteBlockerInfo blocker)
+                        {
+                            return string.Format("{0}: {1}", blocker.TableName, blocker.RowCount);
+                        }));
+
+                        throw new InvalidOperationException(
+                            string.Format(
+                                "Выбранные строки EKZMK не могут быть удалены, потому что на них есть ссылки в таблицах: {0}. По вашему правилу приложение не трогает эти таблицы.",
+                                details));
+                    }
+
+                    var deletedEkzMkFctvlCount = 0;
+                    var deletedDmsCount = 0;
+                    var deletedEkzMkCount = 0;
+
+                    foreach (var cardId in normalizedCardIds)
+                    {
+                        deletedEkzMkFctvlCount += DeleteLineEkzMkFctvl(connection, transaction, documentNumber, cardId);
+                        deletedDmsCount += DeleteLineDms(connection, transaction, documentNumber, cardId);
+                        deletedEkzMkCount += DeleteLineEkzMk(connection, transaction, documentNumber, cardId);
+                    }
+
+                    if (deletedEkzMkCount == 0)
+                    {
+                        throw new InvalidOperationException("Строки EKZMK для выбранных групп не найдены.");
+                    }
+
+                    transaction.Commit();
+
+                    return new DocumentGroupDeleteResult
+                    {
+                        DeletedEkzMkFctvlCount = deletedEkzMkFctvlCount,
+                        DeletedEkzMkCount = deletedEkzMkCount,
+                        DeletedDmsCount = deletedDmsCount
+                    };
+                }
+            }
+        }
+
+        private static List<int> NormalizeCardIds(IEnumerable<int> cardIds, string invalidCardMessage, string emptyListMessage)
+        {
+            if (cardIds == null)
+            {
+                throw new InvalidOperationException(emptyListMessage);
+            }
+
+            var normalizedCardIds = cardIds.Distinct().ToList();
+            if (normalizedCardIds.Count == 0)
+            {
+                throw new InvalidOperationException(emptyListMessage);
+            }
+
+            if (normalizedCardIds.Any(delegate(int cardId) { return cardId <= 0; }))
+            {
+                throw new InvalidOperationException(invalidCardMessage);
+            }
+
+            return normalizedCardIds;
+        }
+
         private static SqlConnection CreateConnection()
         {
             var connectionString = ConfigurationManager.ConnectionStrings["AsumsSql"];
@@ -789,6 +940,63 @@ SELECT @@ROWCOUNT;";
             }
         }
 
+        private static int DeleteLineDms(SqlConnection connection, SqlTransaction transaction, string documentNumber, int cardId)
+        {
+            const string sql = @"
+DELETE d
+FROM dbo.DMS d
+JOIN dbo.VDODVDD vdd ON vdd.IDVDODVDD = d.IDVDODVDD
+JOIN dbo.EKZMK m ON m.IDEKZMK = d.IDOD
+WHERE m.NNZVPV = @DocumentNumber
+  AND m.IDEKZMK = @CardId
+  AND vdd.IDSPVDOD = 2;
+
+SELECT @@ROWCOUNT;";
+
+            using (var command = new SqlCommand(sql, connection, transaction))
+            {
+                command.Parameters.Add("@DocumentNumber", SqlDbType.NVarChar, 60).Value = documentNumber;
+                command.Parameters.Add("@CardId", SqlDbType.Int).Value = cardId;
+                return Convert.ToInt32(command.ExecuteScalar());
+            }
+        }
+
+        private static int DeleteLineEkzMk(SqlConnection connection, SqlTransaction transaction, string documentNumber, int cardId)
+        {
+            const string sql = @"
+DELETE FROM dbo.EKZMK
+WHERE NNZVPV = @DocumentNumber
+  AND IDEKZMK = @CardId;
+
+SELECT @@ROWCOUNT;";
+
+            using (var command = new SqlCommand(sql, connection, transaction))
+            {
+                command.Parameters.Add("@DocumentNumber", SqlDbType.NVarChar, 60).Value = documentNumber;
+                command.Parameters.Add("@CardId", SqlDbType.Int).Value = cardId;
+                return Convert.ToInt32(command.ExecuteScalar());
+            }
+        }
+
+        private static int DeleteLineEkzMkFctvl(SqlConnection connection, SqlTransaction transaction, string documentNumber, int cardId)
+        {
+            const string sql = @"
+DELETE child
+FROM dbo.EKZMKFCTVL child
+JOIN dbo.EKZMK parent ON parent.IDEKZMK = child.IDEKZMK
+WHERE parent.NNZVPV = @DocumentNumber
+  AND parent.IDEKZMK = @CardId;
+
+SELECT @@ROWCOUNT;";
+
+            using (var command = new SqlCommand(sql, connection, transaction))
+            {
+                command.Parameters.Add("@DocumentNumber", SqlDbType.NVarChar, 60).Value = documentNumber;
+                command.Parameters.Add("@CardId", SqlDbType.Int).Value = cardId;
+                return Convert.ToInt32(command.ExecuteScalar());
+            }
+        }
+
         private static int DeleteDocumentDms(SqlConnection connection, SqlTransaction transaction, string documentNumber)
         {
             const string sql = @"
@@ -1100,6 +1308,101 @@ WHERE m.NNZVPV = @DocumentNumber;";
             return keys;
         }
 
+        private static List<DeleteBlockerInfo> LoadDeleteBlockers(SqlConnection connection, SqlTransaction transaction, IEnumerable<int> cardIds)
+        {
+            var aggregated = new Dictionary<string, int>(StringComparer.OrdinalIgnoreCase);
+
+            foreach (var cardId in cardIds)
+            {
+                foreach (var blocker in LoadDeleteBlockers(connection, transaction, cardId))
+                {
+                    int currentCount;
+                    if (!aggregated.TryGetValue(blocker.TableName, out currentCount))
+                    {
+                        currentCount = 0;
+                    }
+
+                    aggregated[blocker.TableName] = currentCount + blocker.RowCount;
+                }
+            }
+
+            return aggregated
+                .OrderBy(delegate(KeyValuePair<string, int> blocker) { return blocker.Key; })
+                .Select(delegate(KeyValuePair<string, int> blocker)
+                {
+                    return new DeleteBlockerInfo
+                    {
+                        TableName = blocker.Key,
+                        RowCount = blocker.Value
+                    };
+                })
+                .ToList();
+        }
+
+        private static List<DeleteBlockerInfo> LoadDeleteBlockers(SqlConnection connection, SqlTransaction transaction, int cardId)
+        {
+            const string sql = @"
+SELECT blocker.TableName, blocker.LinkCount
+FROM
+(
+    SELECT N'EKZMKDH' AS TableName, COUNT(*) AS LinkCount
+    FROM dbo.EKZMKDH child
+    JOIN dbo.EKZMK parent ON parent.IDEKZMK = child.IDEKZMK
+    WHERE parent.IDEKZMK = @CardId
+
+    UNION ALL
+
+    SELECT N'EKZMKEKZK', COUNT(*)
+    FROM dbo.EKZMKEKZK child
+    JOIN dbo.EKZMK parent ON parent.IDEKZMK = child.IDEKZMK
+    WHERE parent.IDEKZMK = @CardId
+
+    UNION ALL
+
+    SELECT N'EKZMKND', COUNT(*)
+    FROM dbo.EKZMKND child
+    JOIN dbo.EKZMK parent ON parent.IDEKZMK = child.IDEKZMK
+    WHERE parent.IDEKZMK = @CardId
+
+    UNION ALL
+
+    SELECT N'FRPTMK', COUNT(*)
+    FROM dbo.FRPTMK child
+    JOIN dbo.EKZMK parent ON parent.IDEKZMK = child.IDEKZMK
+    WHERE parent.IDEKZMK = @CardId
+
+    UNION ALL
+
+    SELECT N'KSPELEKZMK', COUNT(*)
+    FROM dbo.KSPELEKZMK child
+    JOIN dbo.EKZMK parent ON parent.IDEKZMK = child.IDEKZMK
+    WHERE parent.IDEKZMK = @CardId
+) blocker
+WHERE blocker.LinkCount > 0
+ORDER BY blocker.TableName;";
+
+            var blockers = new List<DeleteBlockerInfo>();
+
+            using (var command = new SqlCommand(sql, connection, transaction))
+            {
+                command.Parameters.Add("@CardId", SqlDbType.Int).Value = cardId;
+
+                using (var reader = command.ExecuteReader())
+                {
+                    while (reader.Read())
+                    {
+                        blockers.Add(new DeleteBlockerInfo
+                        {
+                            TableName = GetString(reader, "TableName"),
+                            RowCount = GetInt32(reader, "LinkCount")
+                        });
+                    }
+                }
+            }
+
+            return blockers;
+        }
+
         private static List<DeleteBlockerInfo> LoadDeleteBlockers(SqlConnection connection, SqlTransaction transaction, string documentNumber)
         {
             const string sql = @"
@@ -1315,44 +1618,44 @@ ORDER BY Priority;";
 
                 using (var reader = command.ExecuteReader())
                 {
-                    if (!reader.Read())
+                    if (reader.Read())
                     {
-                        return null;
+                        return new EkzMkTemplate
+                        {
+                            IdSpmu = GetNullableInt32(reader, "IDSPMU"),
+                            IdGrsi = GetNullableInt32(reader, "IDGRSI"),
+                            IdKsprl = GetNullableInt32(reader, "IDKSPRL"),
+                            IdSpvdmc = GetNullableInt32(reader, "IDSPVDMC"),
+                            IdFrpd = GetInt32(reader, "IDFRPD"),
+                            IdSpmpob = GetNullableInt32(reader, "IDSPMPOB"),
+                            IdPrsn = GetNullableInt32(reader, "IDPRSN"),
+                            IdSpkmmk = GetNullableInt32(reader, "IDSPKMMK"),
+                            IdSpvdkl = GetNullableInt32(reader, "IDSPVDKL"),
+                            IdPrsnvd = GetNullableInt32(reader, "IDPRSNVD"),
+                            Prmk = GetInt32(reader, "PRMK"),
+                            Stmk = GetNullableDecimal(reader, "STMK"),
+                            Stmkdp = GetNullableDecimal(reader, "STMKDP"),
+                            NcSrmk = GetNullableDecimal(reader, "NCSRMK"),
+                            IdPrsnsd = GetNullableInt32(reader, "idprsnsd"),
+                            IdPrsnpr = GetNullableInt32(reader, "idprsnpr"),
+                            IdPrsnvy = GetNullableInt32(reader, "idprsnvy"),
+                            IdSptsmp = GetNullableInt32(reader, "idsptsmp"),
+                            IdSpssmp = GetNullableInt32(reader, "idspssmp"),
+                            Nrvrmndmp = GetNullableDecimal(reader, "NRVRMNDmp"),
+                            Nrvrmmp = GetNullableDecimal(reader, "NRVRMmp"),
+                            Vrmkfk = GetNullableDecimal(reader, "VRMKFK"),
+                            IdKsp = GetNullableInt32(reader, "IDKSP"),
+                            Dpznmp = GetString(reader, "DPZNmp"),
+                            Hrtcmp = GetString(reader, "HRTCmp"),
+                            IdSpvdsbmk = GetNullableInt32(reader, "IDSPVDSBMK"),
+                            IdEkzetl = GetNullableInt32(reader, "IDEKZETL"),
+                            SourceDescription = GetString(reader, "SourceDescription")
+                        };
                     }
-
-                    return new EkzMkTemplate
-                    {
-                        IdSpmu = GetNullableInt32(reader, "IDSPMU"),
-                        IdGrsi = GetNullableInt32(reader, "IDGRSI"),
-                        IdKsprl = GetNullableInt32(reader, "IDKSPRL"),
-                        IdSpvdmc = GetNullableInt32(reader, "IDSPVDMC"),
-                        IdFrpd = GetInt32(reader, "IDFRPD"),
-                        IdSpmpob = GetNullableInt32(reader, "IDSPMPOB"),
-                        IdPrsn = GetNullableInt32(reader, "IDPRSN"),
-                        IdSpkmmk = GetNullableInt32(reader, "IDSPKMMK"),
-                        IdSpvdkl = GetNullableInt32(reader, "IDSPVDKL"),
-                        IdPrsnvd = GetNullableInt32(reader, "IDPRSNVD"),
-                        Prmk = GetInt32(reader, "PRMK"),
-                        Stmk = GetNullableDecimal(reader, "STMK"),
-                        Stmkdp = GetNullableDecimal(reader, "STMKDP"),
-                        NcSrmk = GetNullableDecimal(reader, "NCSRMK"),
-                        IdPrsnsd = GetNullableInt32(reader, "idprsnsd"),
-                        IdPrsnpr = GetNullableInt32(reader, "idprsnpr"),
-                        IdPrsnvy = GetNullableInt32(reader, "idprsnvy"),
-                        IdSptsmp = GetNullableInt32(reader, "idsptsmp"),
-                        IdSpssmp = GetNullableInt32(reader, "idspssmp"),
-                        Nrvrmndmp = GetNullableDecimal(reader, "NRVRMNDmp"),
-                        Nrvrmmp = GetNullableDecimal(reader, "NRVRMmp"),
-                        Vrmkfk = GetNullableDecimal(reader, "VRMKFK"),
-                        IdKsp = GetNullableInt32(reader, "IDKSP"),
-                        Dpznmp = GetString(reader, "DPZNmp"),
-                        Hrtcmp = GetString(reader, "HRTCmp"),
-                        IdSpvdsbmk = GetNullableInt32(reader, "IDSPVDSBMK"),
-                        IdEkzetl = GetNullableInt32(reader, "IDEKZETL"),
-                        SourceDescription = GetString(reader, "SourceDescription")
-                    };
                 }
             }
+
+            return LoadFallbackTemplate(connection, transaction, instrumentId);
         }
 
         private static EkzMkTemplate LoadFallbackTemplate(SqlConnection connection, SqlTransaction transaction, int instrumentId)
@@ -1365,11 +1668,11 @@ WITH DefaultLab AS
     FROM dbo.EKZMK m
 )
 SELECT TOP (1)
-    periodInfo.IDGRSI,
-    periodInfo.IDSPVDMC,
+    COALESCE(periodByInstrument.IDGRSI, periodByType.IDGRSI) AS IDGRSI,
+    COALESCE(periodByInstrument.IDSPVDMC, periodByType.IDSPVDMC) AS IDSPVDMC,
     defaultLab.DefaultIdFrpd AS IDFRPD,
     tprz.IDSPKMMK,
-    periodInfo.PRMK,
+    COALESCE(periodByInstrument.PRMK, periodByType.PRMK) AS PRMK,
     tprz.DPZN AS DPZNmp,
     tprz.HRTC AS HRTCmp,
     CAST(N'Период из TPRMCP' AS nvarchar(60)) AS SourceDescription
@@ -1379,26 +1682,27 @@ CROSS JOIN DefaultLab defaultLab
 OUTER APPLY
 (
     SELECT TOP (1)
-        COALESCE(periodByInstrument.IDGRSI, periodByType.IDGRSI) AS IDGRSI,
-        COALESCE(periodByInstrument.IDSPVDMC, periodByType.IDSPVDMC) AS IDSPVDMC,
-        COALESCE(periodByInstrument.PRMK, periodByType.PRMK) AS PRMK
-    FROM
-    (
-        SELECT t.IDGRSI, t.IDSPVDMC, t.PRMK
-        FROM dbo.EKZMCP e
-        JOIN dbo.TPRMCP t ON t.IDTPRMCP = e.IDTPRMCP
-        WHERE e.IDEKZ = z.IDEKZ
-    ) periodByInstrument
-    FULL JOIN
-    (
-        SELECT t.IDGRSI, t.IDSPVDMC, t.PRMK
-        FROM dbo.TPRMCP t
-        WHERE t.IDTPRZ = z.IDTPRZ
-    ) periodByType ON 1 = 0
-) periodInfo
+        t.IDGRSI,
+        t.IDSPVDMC,
+        t.PRMK
+    FROM dbo.EKZMCP e
+    JOIN dbo.TPRMCP t ON t.IDTPRMCP = e.IDTPRMCP
+    WHERE e.IDEKZ = z.IDEKZ
+    ORDER BY e.IDEKZMCP DESC, t.IDTPRMCP DESC
+) periodByInstrument
+OUTER APPLY
+(
+    SELECT TOP (1)
+        t.IDGRSI,
+        t.IDSPVDMC,
+        t.PRMK
+    FROM dbo.TPRMCP t
+    WHERE t.IDTPRZ = z.IDTPRZ
+    ORDER BY t.IDTPRMCP DESC
+) periodByType
 WHERE z.IDEKZ = @InstrumentId
   AND defaultLab.DefaultIdFrpd IS NOT NULL
-  AND periodInfo.PRMK IS NOT NULL;";
+  AND COALESCE(periodByInstrument.PRMK, periodByType.PRMK) IS NOT NULL;";
 
             using (var command = new SqlCommand(sql, connection, transaction))
             {
diff --git a/XLAB/PsvModels.cs b/XLAB/PsvModels.cs
index db52a42..8d22ac3 100644
--- a/XLAB/PsvModels.cs
+++ b/XLAB/PsvModels.cs
@@ -125,8 +125,10 @@ namespace XLAB
         }
     }
 
-    public sealed class PsvDocumentLine
+    public sealed class PsvDocumentLine : ObservableObject
     {
+        private bool _isBatchSelected;
+
         public int CardId { get; set; }
 
         public int InstrumentId { get; set; }
@@ -181,6 +183,12 @@ namespace XLAB
 
         public bool IsPendingInsert { get; set; }
 
+        public bool IsBatchSelected
+        {
+            get { return _isBatchSelected; }
+            set { SetProperty(ref _isBatchSelected, value); }
+        }
+
         public string DuplicateKey
         {
             get
@@ -235,8 +243,10 @@ namespace XLAB
         }
     }
 
-    public sealed class PsvDocumentGroupSummary
+    public sealed class PsvDocumentGroupSummary : ObservableObject
     {
+        private bool _isBatchSelected;
+
         public string InstrumentType { get; set; }
 
         public string RangeText { get; set; }
@@ -251,6 +261,12 @@ namespace XLAB
 
         public int RejectedCount { get; set; }
 
+        public bool IsBatchSelected
+        {
+            get { return _isBatchSelected; }
+            set { SetProperty(ref _isBatchSelected, value); }
+        }
+
         public bool Matches(PsvDocumentLine line)
         {
             return line != null
@@ -385,6 +401,15 @@ namespace XLAB
         public int DeletedDmsCount { get; set; }
     }
 
+    internal sealed class DocumentGroupDeleteResult
+    {
+        public int DeletedEkzMkFctvlCount { get; set; }
+
+        public int DeletedEkzMkCount { get; set; }
+
+        public int DeletedDmsCount { get; set; }
+    }
+
     internal sealed class DocumentSaveResult
     {
         public string DocumentNumber { get; set; }