Error S& 150 Updating could not be completed while creating Classic PO from Rfq Response

Hi Gurus,

We have SRM7.0 ( SP09) with ECC6  having Classic Scenario SC->RFQ->RFQ Response->PO..

While creating a PO from accepted, we are getting an error Error S& 150 Updating could not be completed and PO is not getting created.

I debugged an found that the PO create BAPI is yielding a successful message but while calling a commit it is getting this Error.

From other discussions i found that i need to maintain Default Output device as LOCL & check the Output immediately option for RFC user in SU01.

I did that but still i am getting this error, Another strange thing is the same is not happening in Development. I am getting this error in QA (we are yet to go live).

Please advice what else could be the possible reason for this error. Because the error message is very misleading and i am not getting any clue for this.

Thanks in advance!!!

Regards

Punit