29-04-2018 10:21:50: Failed to recalculate.

System.InvalidOperationException: The transaction is either not associated with the current connection or has been completed.
   at System.Data.SqlClient.SqlBulkCopy.CreateOrValidateConnection(String method)
   at System.Data.SqlClient.SqlBulkCopy.WriteRowSourceToServerAsync(Int32 columnCount, CancellationToken ctoken)
   at System.Data.SqlClient.SqlBulkCopy.WriteToServer(IDataReader reader)
   at InherentSimplicity.DataAccess.DassBulkCopy.BulkInsert(IDataReader reader, BulkCopySettings settings)
   at InherentSimplicity.DataAccess.InvCoverage.DassInvCoverage.saveDataForSkusNewWeek(IEnumerator enumartorStores, Boolean isSku, SqlConnection conn, SqlTransaction trans, Nullable`1 partitionID, String SalePartitionFunctionName, String TempSalePartitionFunctionName, String MTSPartitionFunctionName, String HPartitionFunctionName)
   at InherentSimplicity.Module1.Coverage.InvCoverageCalculator.saveStoreData(DateTime weekEnd, SqlConnection conn, SqlTransaction trans, Boolean saveLastCalcDate, Nullable`1 partitionID)
   at InherentSimplicity.Module1.Coverage.InvCoverageManager.doCalcualate(DateTime weekEnd, SqlConnection conn, SqlTransaction trans, Boolean initialCase, Boolean lastRound)
   at InherentSimplicity.Module1.Coverage.InvCoverageManager.calcualate(SqlConnection conn, SqlTransaction trans)
   at InherentSimplicity.Module1.Recalculation.calcualteInventoryCovarage(SqlConnection conn, SqlTransaction trans)
   at InherentSimplicity.Module1.Recalculation.recalculateAll(Boolean afterLoadFile)
   at InherentSimplicity.Module1.SymphonyInitApplication.recalculate(String dbName, Boolean isConnectionOpen, String& resultStr, Nullable`1 ActionSource, Boolean forceDplm)
29-04-2018 10:21:50: loadFiles general exception: The transaction is either not associated with the current connection or has been completed.
29-04-2018 10:21:50: 
System.InvalidOperationException: The transaction is either not associated with the current connection or has been completed.
   at System.Data.SqlClient.SqlBulkCopy.CreateOrValidateConnection(String method)
   at System.Data.SqlClient.SqlBulkCopy.WriteRowSourceToServerAsync(Int32 columnCount, CancellationToken ctoken)
   at System.Data.SqlClient.SqlBulkCopy.WriteToServer(IDataReader reader)
   at InherentSimplicity.DataAccess.DassBulkCopy.BulkInsert(IDataReader reader, BulkCopySettings settings)
   at InherentSimplicity.DataAccess.InvCoverage.DassInvCoverage.saveDataForSkusNewWeek(IEnumerator enumartorStores, Boolean isSku, SqlConnection conn, SqlTransaction trans, Nullable`1 partitionID, String SalePartitionFunctionName, String TempSalePartitionFunctionName, String MTSPartitionFunctionName, String HPartitionFunctionName)
   at InherentSimplicity.Module1.Coverage.InvCoverageCalculator.saveStoreData(DateTime weekEnd, SqlConnection conn, SqlTransaction trans, Boolean saveLastCalcDate, Nullable`1 partitionID)
   at InherentSimplicity.Module1.Coverage.InvCoverageManager.doCalcualate(DateTime weekEnd, SqlConnection conn, SqlTransaction trans, Boolean initialCase, Boolean lastRound)
   at InherentSimplicity.Module1.Coverage.InvCoverageManager.calcualate(SqlConnection conn, SqlTransaction trans)
   at InherentSimplicity.Module1.Recalculation.calcualteInventoryCovarage(SqlConnection conn, SqlTransaction trans)
   at InherentSimplicity.Module1.Recalculation.recalculateAll(Boolean afterLoadFile)
   at InherentSimplicity.Module1.SymphonyInitApplication.recalculate(String dbName, Boolean isConnectionOpen, String& resultStr, Nullable`1 ActionSource, Boolean forceDplm)
   at InherentSimplicity.Module1.SymphonyInitApplication.recalculate(String DBName, Boolean isConnectionOpen, String& resultStr, Boolean forceDplm)
   at InherentSimplicity.Module1.SymphonyInitApplication.loadFiles(String dbName, Nullable`1 ActionSource, Boolean sExportCustomReport, Boolean sEmailCustomReports, Boolean autoloadOn, Boolean forceDplm)
29-04-2018 10:21:50: ------------------------------------
29-04-2018 10:21:50: --> Rollback
29-04-2018 10:21:50: Failed to rollback transactionThis SqlTransaction has completed; it is no longer usable.