Update: Here is an error message that I could capture:
Action: SubmitToSharePointList. Arguments: submit: EditListItem
. Details: Enumeration already finished.. Stack: at System.SZArrayHelper.SZGenericArrayEnumerator`1.get_Current()
at Qdabra.Tools.RulesLibrary.SharePointListSubmitterWebService.PopulateIdsAndLastModified(XPathNavigator outputNav, Mapping mapping, IEnumerable`1 nodes, String idXpath)
at Qdabra.Tools.RulesLibrary.SharePointListSubmitterWebService.UploadListData(Mapping mapping, SubmitToListSettings settings, IEnumerable`1 nodes, String listNameOrGuid, String idXPath, XmlElement batch)
at Qdabra.Tools.RulesLibrary.SharePointListSubmitter.PerformSubmit(Mapping mapping, SubmitToListSettings settings, IEnumerable`1 baseNodes)
at Qdabra.Tools.RulesLibrary.SubmitToSharePointList.PerformSubmitToList(SubmitToListSettings settings)
at Qdabra.Tools.RulesLibrary.SubmitToSharePointList.<>c__DisplayClass3.b__2()
at Qdabra.Tools.RulesLibrary.SubmitToSharePointList.Execute()
at Qdabra.Tools.RulesLibrary.CommandStarter.Run()
at Qdabra.Tools.RulesLibrary.Commands.RunCommand(Commands command)
at Qdabra.Tools.RulesLibrary.Commands.ExecuteCommand()
This error message was captured when I deleted two items from table 1 and two items from table 2 at once and then submitted to SharePoint.
The SharePoint items in table 1 were successfully deleted. The items in SharePoint table 2 not.