Leere Strings (item_type = 0) nicht mehr in die DB schreiben

Kommentare korrigiert

Jobs/ZUGFeRD/ImportZUGFeRDFiles.vb

@@ -1157,6 +1157,12 @@ Public Class ImportZUGFeRDFiles
                 Continue For
             End If
 
+            ' ItemType = 0 (normale texte) dürfen nicht leer sein
+            If oProperty.ItemType = 0 And oProperty.Value.IsNullOrEmpty Then
+                _logger.Debug("No Mapping for Property [{0}] with empty value, because of ItemType = 0.", oProperty.TableColumn)
+                Continue For
+            End If
+
             ' If GroupCounter is -1, it means this is a default property that can only occur once.
             ' Set the actual inserted value to 0
             Dim oGroupCounterValue As Integer = oProperty.GroupCounter