Hi Qingda Niu,
Thank you for the information. I know that using the above given method I can get all the line items of purchase req. at a time, but those items are in reference format like '->{O:1265*\FUNCTION-POOL=MEREQ\CLASS=LCL_REQ_ITEM}'. Could you please help me how to decode it into original format and update some field value, which will be updated in database.
Regards,
Jitendra