Transaction behaving differently in background processing

How do I fix a transaction that is behaving differently in background processing in a Batch Input session than when running in dialog. An error session is produced when processing in background when in fact there are no errors. When processing the session using display errors only, the whole session is processed successfully without pausing in any of the screens. The transaction in question is F-32. On the first screen, 'None' radio button is selected on 'Additional Selections' tab. We want to get rid of the Error Session if there are no errors. In background, it stops at screen 700, with the message 'Enter line items first of all or choose open items'. Help !!