Help on shopping cart line items

Question

Hi,
i  am    working  on  srm  ,  i  has  to  display error message  if items of different types are in SRM-shopping cart,
the  details  in  technical  spec  is  as  below ,
1.     Implement the BADI BBP_DOC_CHECK_BADI.
2.     Create a custom table ZSRM_WGR_SORTEN and also create a table maintenance generator for it and maintain the entries in it.
3.     The specification for the custom table is given in section 3.1.1
4.     We need to populate an error message if the SC has line items of different types
5.     The logic for this is given in section 3.1.3. We have the header data in ls_header based on which we will get the Shopping Cart data via FM u201CBBP_PROCDOC_GETDETAILu201D.
6.     Then looping through item data we will process our logic to check if the SC line items are of same type or not.
7.     If the line items are of different type, we need to populate the error message u201CThe item &1 has the same type as item &2u201D
8.     A separate message class has been defined for it by the name ZSRM
The check occurs in CHECK-BADI. The steps to be executed are:
     Read the shopping cart items
     Run all items:
     Determine and note the product categories-ID and process-ID (using item data, process-ID is a customer field,  see     CD 2553_E_1_procurement_010 for process-ID) of an item in an internal table.
     If 1st item: continue, otherwise: check, whether same product category and process-ID are noted already. If no: is the combination of WGR_ID_ADD and PROCID_ADD as per table ZSRM_WGR_SORTEN is allowed: If no: Display an error message
i am  doing  coding  as  below ,
  CALL FUNCTION BBP_PROCDOC_GETDETAIL
    EXPORTING
      i_guid     = iv_doc_guid
    IMPORTING
      e_header   = ls_header
    TABLES
      e_item     = lt_item
      e_account  = lt_account
      e_limit    = lt_limit
      e_partner  = lt_partner
      e_orgdata  = lt_orgdata
      e_messages = lt_in_messages.
The item data then exists in lt_item (incl. process- IDs of the items), using which it can be iterated with the LOOP command:
LOOP AT lt_item INTO ls_item WHERE del_ind EQ space.
what  will  be  code  here  , please  guide
ENDLOOP.
and  also  how  to  handle  message ,  i  am  doing  coding  as  below,
  DATA: ls_message         TYPE bbp_smessages_badi.
        ls_message-msgno   = '002'. //Meldungsnummer
        ls_message-msgty   = 'E'.
        ls_message-msgid   = 'ZSRM'.
        ls_message-msgv1   = ls_item-number_int.
        ls_message-msgv2   = <Pos.Nummer mit schon vorhandener Sorte>
    what  will  be  code  here  , please  guide
        APPEND ls_message TO et_messages.

Answer 1

Hi. To get the SC number on the backend PO you must be using a BADI, probably either BBP_DOC_CHANGE_BADI or BBP_CREATE_BE_PO_NEW or BBP_CREATE_PO_BACK.
Look in these BADIs, the cart data is probably not being looped around correctly.
Regards,
Dave.