diff --git a/Modules.Jobs/EDMI/ZUGFeRD/ImportZUGFeRDFiles.vb b/Modules.Jobs/EDMI/ZUGFeRD/ImportZUGFeRDFiles.vb
index c4245f40..e9d9f6a6 100644
--- a/Modules.Jobs/EDMI/ZUGFeRD/ImportZUGFeRDFiles.vb
+++ b/Modules.Jobs/EDMI/ZUGFeRD/ImportZUGFeRDFiles.vb
@@ -229,7 +229,7 @@ Public Class ImportZUGFeRDFiles
                                 oMD5CheckSum = CreateMD5(oFile.FullName)
                                 If oMD5CheckSum <> String.Empty Then
                                     Dim oCheckCommand = $"SELECT * FROM TBEDM_ZUGFERD_HISTORY_IN WHERE GUID = (SELECT MAX(GUID) FROM TBEDM_ZUGFERD_HISTORY_IN WHERE UPPER(MD5HASH) = UPPER('{oMD5CheckSum}'))"
-                                    Dim oMD5DT As DataTable = _firebird.GetDatatable(oCheckCommand, Firebird.TransactionMode.ExternalTransaction, oTransaction)
+                                    Dim oMD5DT As DataTable = _firebird.GetDatatable(oCheckCommand, Firebird.TransactionMode.NoTransaction)
                                     If Not IsNothing(oMD5DT) Then
                                         If oMD5DT.Rows.Count = 1 Then
                                             Dim oRejected As Boolean