While working on BADI coping from PR to PO, it's not triggering

Question

Hi,
I am working on BADI to get one field VENDOR MATERIAL NO to get displayed in PO while coping from PR to PO in IDES version.
I have created PR and based on that PR, I want to create PO but one particular field VENDOR MATERIAL NO  is not copied from PR to PO.
I have used on BADI ...ME_PROCESS_PO_CUST  and Method is PROCESS_HEADER.
I have used this below code
method IF_EX_ME_PROCESS_PO_CUST~PROCESS_HEADER.
method IF_EX_ME_PROCESS_PO_CUST~PROCESS_HEADER.
    DATA: po_items TYPE purchase_order_items,
    po_item_obj TYPE purchase_order_item,
    lv_BANFN type eban-banfn,
    lv_BNFPO type eban-bnfpo,
    lv_idnlf type eban-idnlf,
    po_item TYPE mepoitem.
*-Get All Line Items
    po_items = im_header->get_items( ).
*-Set vendor material no For Each Line Item
    LOOP AT po_items INTO po_item_obj.
      po_item = po_item_obj-item->get_data( ).
Get the Vendor Material Number
      SELECT SINGLE
      BANFN
      BNFPO
      idnlf
      FROM EBAN
      into (lv_BANFN , lv_BNFPO , lv_idnlf)
      WHERE BANFN = po_item-BANFN
      AND BNFPO = po_item-BNFPO.
      if sy-subrc EQ 0.
        po_item-idnlf = lv_idnlf.
        po_item_obj-item->set_data( po_item ).
        clear: lv_BANFN,
        lv_BNFPO,
        lv_idnlf.
      endif.
    ENDLOOP.
endmethod.                    "IF_EX_ME_PROCESS_PO_CUST~PROCESS_HEADER
endmethod.                    "IF_EX_ME_PROCESS_PO_CUST~PROCESS_HEADER
But this BADI not getting trigerred in IDES... ECC6.
So can any one help me on this
Waiting for quick response.
Best Regards,
BDP

Answer 1

Dear Jürgen,
Thanks for the prompt revert. I create a PR by using the ME51N and later create a PO via ME21N with reference to the PR. After I drag and drop the PR into the basket (PO screen), subsequently, the system ask me to fill up all the information again about the account assignment. I tested with other account assignment category, such as "K", it is able to copy the reference (PR's account assignment information) to the PO without any problem.
Thank you.
Regards,
Edwin