VBUK/VBUP table not getting updated when posting Good Receipt

Hi all,

We post good receipt for the inbound delivery using BAPI_GOODSMVT_CREATE. Upon the successful completion of GR (for all items of inb delivery), however, field WBSTK & GBSTK in VBUK table and field WBSTA & GBSTA in VBUP table are not getting updated from A to C for the inbound delivery.

Wondering anybody here has experienced the similar issue before?

PS : I've searched in SDN, but no "good" result, I don't want to update VBUK/VBUP directly.

Thanks a lot,

Mustapha