user exit/badi to add items to a material document
Is there any user exit/badi which can be used to add an item while creating a goods receipt document in MIGO. The requirement is that when user does a GR against a PO, the exit should check if there is a returnable packaging material for the material in the PO, and then include this packaging material in the GR. We found user exits/badis which allow changes to an existing item, but didnt find any which can be used to append an item.
Let us know if there is any way to do this.