Regarding BDC problem

Hi ,

Could you please help me regarding BDC problem.

I am creating outbound delivery document using BDC(VLMOVE - tcode), then after getting delivery number, i have to change this delivery document by VL02N.

Some times i am getting error message like 'Delivery document is locked by user(my name)' at the BDC of changing the delivery document.

But in the debugging mode, its not displaying any error message.

Is there anything like update options i have to change for BDC of VLMOVE.

Rite now i am using update mode LOCAL.

Advanced thanks for you all.

Regards

Rajesh