Serial No in BAPI_GOODSMVT_CREATE

Hi All,

I m developing a Y transaction for GR using Barcode. For that I m using a BAPI 'BAPI_GOODSMVT_CREATE' to post the data.

Our requirement for serialized material is to maintain serial nos manually.

In BAPI, for Serialized material, I maintain a flag 'SERIALNO_AUTO_NUMBERASSIGNMENT'.

If i set 'X' for this flag it autogenerates the Serial Nos. and if i set 'SPACE' it gives me error message while posting the document that 'Maintain serial nos for serialized material', eventhough i have maintained the serial nos.

Can anybody guide me to use this flag?? It will be very helpful to me.

Thanks & Regards,

Sagar Vadher