Serial Numbers in Delivery Creation SAPMV50A

Hi ,

Does anyone know the global structure or internal table in which the serial numbers entered for the items get stored while creating an outbound delivery, TCode VL01N program SAPMV50A.

I need to refer back to the serial numbers entered while inside a user-exit which gets triggered during save.

N.B:- It is not XLIPS-SERNR.

Greatly appreciate if someone can help out.

Thanks

Rudra