Problem with BAPI_PO_CHANGE & BAPI_TRANSACTION_COMMIT

Hi there!

I've got a little problem with changing orders in SAP R/3 via Adaptive RFC using the above mentioned BAPIS.

When I call the first one - either changing an order-position or a disposition - , it returns the Message "order xxx changed successfully".

Afterwards, I call the 2nd bapi to commit the transaction, which returns an empty line.

Unfortunatly, neither the changes have been adopted nor the lock on the tables EKKO & EKPO is released and - additionally - I find the RFC session to be still open.

Any comments are more than appreciated!

BR

Thomas