Restriction for purchase Requisition Number in ME21N

Question

Hi All,
I want to raise an error message in ME21N, if the user creating PO without perchase rechase requisition number. For this i choosed one BADI.
Definition Name: ME_PROCESS_PO_CUST
Interface Name : IF_EX_ME_PROCESS_PO_CUST
i have implemented the BADI  ZCHECK_PR
Method :  IF_EX_ME_PROCESS_PO_CUST~PROCESS_ITEM
I have written code like this in PROCESS_ITEM method
DATA: ls_mepoitem TYPE mepoitem,
        ls_customer TYPE mepo_badi_exampl,
        ls_tbsg     TYPE tbsg.
  INCLUDE mm_messages_mac. "useful macros for message handling
* here we check customers data
  ls_mepoitem = im_item->get_data( ).
BREAK-POINT.
if ls_mepoitem-bstyp = 'ZV01'.
   if ls_mepoitem-banfn is INITIAL.
      message 'Enter Purchase Requisition Number' type 'E'.
   endif.
endif.
Saved & Activated  this.
But while testing this in ME21N, it is not at all going to debug mode( I have created PO for ZV01 order type only).
Is there any thing not finished for BADI?
Can any one help me.
Thank You.

Answer 1

Vishnu,
Very strange, just try deactivating and deleting your implementation and create a fresh one in the same client where you are testing and assign it to a transport request and check.
Actually this BADI is already migrated to an Enhance spot in ECC 6 with same name 'ME_PROCESS_PO_CUST' but I still believe that SIMPLE badi implementation is still supported. OR Better do it with the latest way.
Create an enhancement implementation of Enh spot ME_PROCESS_PO_CUST in SE19 and then for that Enh implementation, create a BADI implementation and an implementing class. Code the required thing in the implementing class methods and then check if it works. It's actually almost same way as implementing a simple BADI. If you need any help, search Forums or get back here.
Pls note that Enh framework implementations are much faster than conventional BADIs and should always be used.
BR,
Diwakar