Thanks,
that means that I have do the Goods Issue with respect to ReservationID.
Only then withdrawn quantity and reserved quantity are updated.
if you follow the link to my other topic, you can see, that the Goods issue is done with respect to Production Order. There is no message element like ReservationID defined for the request message of enterprise service ECC_GOODSMOVEMENTCRTRC1.
I think, that I have to search for another Enterprise Service which allows to submit a ReservationID and a ReservationItemID to the ecc backend.
Regards,
Roland