Call Transaction : sy-subrc 1001 : mode 'N'

Hi Gurus,

There is a BDC program for creating propduction order which i am executing in background mode 'N' and sy-subrc gets 1001 and production order Doesnt gets created. I found similar post. It says that when we check in debugging mode sy-subrc will be 1001 but still why my production order does not get created.

But if i run in mode like 'A' or 'E' it works perfectly.

Rewards will be provided. Please help