LSMW BAPI BUS2012 Purchase Order Item No EKPO-EBELP Issue

Hi,

I am trying to migrate purchase orders using BAPI.

Everything is working fine except EKPO-EBELP is getting updated incorrectly.

For example I am migrating PO have 2 lines with item number 30 and 40 but then system is ignoring it and assigning default item number as 10 and 20 instead of what is in upload file as 30 and 40.

I check in IDOC segments that item number 30 and 40 are passed correctly but still when I display the purchase order then its showing as 10 and 20.

Best Regards

Murtuza