Using BAPI_PO_CHANGE to update PO with item actegory B
I have a requirement to update the PO with item category B which is created by referring PR having account assignment category N(.( So I have a PO with Acc assignment N now have to update the item category with B ). I am using BAPI_PO_CHANGE to update the item category with B .in me22n system will prompt the Limits ( overall limit , expected value) and Network details ( like GL acc and Network and activity code) so i am passing lt_poitem,lt_poitemx,lt_polimits,lt_poaccount,lt_poaccountx,lt_POSRVACCESSVALUES. System is issuing a message Buffer table is not up-to-date . Please let me know if any one updated the PO with item category B using BAPI_PO_CHANGE and please provide sample code for the same if possible. Thanks in advance.