ME51(2/3/4)N Reset release purchase requisition

Question

Hello,
I need to reset the issue of the purchase request after a specific condition occurs.
To reset the issue I found the user exit EXIT_SAPLMEREQ_010
(Includes ZXM02U12 MEREQ001 and extension).
I first used this function:
      CALL FUNCTION 'ME_REL_STRATEGIE_EBAN'
         EXPORTING
            i_eban_new           =  wa_im_eban
           I_EBAN_OLD          =  IM_T_EBAN_PERS
           I_EBKN_NEW          =  IM_T_EBKN
           I_EBKN_OLD          =  IM_T_EBKN_PERS
          I_XCLASS             =
          I_CHANGE_OK          =
          I_CHECK_ALWAYS       =
         IMPORTING
           E_EBAN                =  wa_eban
           E_RESET               =  wa_ereset
but I did not understand how to use it.
Then I used the field-symbol:
DATE f_FRGKZ (30) VALUE '(SAPLMEREQ) EBAN-FRGKZ'.
FIELD-symbols <FRGKZ>.
ASSIGN (f_FRGKZ) TO <FRGKZ>.
        MOVE 'X' TO <FRGKZ>.
But a dump is generated on the move: Error at assignment: overwritten protected field.
HELP ME - I don't know what to do.
Edited by: Ermelinda86 on Jul 8, 2010 10:36 AM

Answer 1

Hi Ermelinda86,
I had a problem similar to what you're experiencing. I solved by changing appropriately customizing.
The route from the transaction "spro" is as follows:
Material Management --> Purchasing ---> Purchase Requisition ---> Release Procedure -
> Procedure with classification ---> Set Up procedure with classification -
> Release Indicator     
Material Management --> Purchasing ---> Purchase Requisition ---> Release Procedure -
> Procedure with classification ---> Set Up procedure with classification -
> Release Strategies ---> Release Statuses
I also found a useful guide at this link:
http://www.sap123.com/a/59/
Bye
Prode