Print dialog poping up for WF-BATCH

Question

Within my background task method, I do BDC on tcode IMA2N to add measures to an existing Appropriation request.This works perfectly when I execute the object method from SWO1.
But when this method is called from workflow it throws an error u201CNo batch input data for screen SAPLSPRI 0100u201D. This is a print dialog which pops up from function module u201CGET_PRINT_PARAMETERSu201D, called from standard program.
Is there any way to suppress this screen? Please help.
The error is thrown only for user WF-BATCH. Is it related to user settings or something?
(SAP note 904406 confirm that we could do BDC on IMA2N. )

Answer 1

Thanks Vijay for the answer.
Actually Ihe entire logic was in a Function module which just takes in AR number and returns BAPIRET2 table for errors.
Once I found that this is failing, I even tried by placing it in a report with parameter as AR number and called it by SUBMIT AND RETURN. Both Failed.
Now I need to see if it workf on converting recording directly to Function module and call it from BO method, as suggested in the blog link provided. I will update if it is successful. Thanks.