With the Business Add-In (BAdI) ME_REQ_POSTED, you can trigger a variety of follow-on processing operations for purchase requisitions at the time of posting.
The POSTED method enables you to trigger a variety of follow-on processes for purchase requisitions at the time of posting.

Parameters

The following parameters are available:
•IM_EBAN - Purchase requisition new
•IM_EBAN_OLD - Purchase requisition old
•IM_EBKN - Purchase requisition account assignment new
•IM_EBKN_OLD - Purchase requisition account assignment old

Notes
On no account use a Commit in this method.