Invalid COMMIT WORK in an update function module.

Hi,Experts,

Currently We got a problem for posting PO's GR with t-code MIGO. Our requirement is that can create Delivery by automaitcly after PO's GR is saving. Then I have tailored a program for creating delivery.The program will be triggered in an output type when saving action is done.

Error info is as below

"Calling a COMMIT WORK in an update process is not allowed

because the function modules triggered in a Logical Unit

of Work cannot then be processed correctly."

Any help will be appreciated

Thanks in advance

Richard Zhou