diff --git a/Service/ServiceImplementations/AccountingServiceImp.cs b/Service/ServiceImplementations/AccountingServiceImp.cs
index 9e4daf50f..6fd7863e3 100644
--- a/Service/ServiceImplementations/AccountingServiceImp.cs
+++ b/Service/ServiceImplementations/AccountingServiceImp.cs
@@ -937,12 +937,12 @@ namespace BeWo.Service.ServiceImplementations
 			if (entity.GkvTransferProtokolle is null)
 				entity.GkvTransferProtokolle = new List<GkvTransferProtokoll>();
 
-			entity.GkvTransferProtokolle.Add(protokoll);
-
 			try
 			{
 				CreateGkvTransferProtokoll(oid, entity, protokoll);
 
+				entity.GkvTransferProtokolle.Add(protokoll);
+
 				// Protokoll braucht Oid
 				DAOFactory.GenericDAO.Update(entity);
 
@@ -1166,7 +1166,7 @@ namespace BeWo.Service.ServiceImplementations
 			}
 			else
 			{
-				throw new ArgumentException("Versucht Transfernummer zu laden, invalid state", nameof(state));
+				throw new ArgumentException($"Versucht Transfernummer zu laden, invalid state: {state}", nameof(state));
 			}
 
 			return new Tuple<int, int>(datenaustauschref, transfernummer);