ME22n - doubt in IMPORT/EXPORT in EXIT_SAPMM06E_013 and EXIT_SAPMM06E_012

Question

hi
i need to validate a condition in EXIT_SAPMM06E_013 and accordingly i need to populate the error msg in EXIT_SAPMM06E_012 while saving and stop the PO posting.
in ZXM06U44 in EXIT_SAPMM06E_013 i have written the code
IF sy-mandt = 888.
  DATA: gv_check TYPE xfeld.
  DATA: itab TYPE STANDARD TABLE OF uekes,
  wa TYPE uekes.
  IF sy-tcode = 'ME22N' OR
     sy-tcode = 'ME22'.
    LOOP AT xekes.
      IF xekes-ebtyp = 'LA' AND
         xekes-vbeln = space.
        gv_check = 'X'.
        EXIT.
      ENDIF.
    ENDLOOP.
    IF gv_check = 'X'.
      EXPORT gv_check = 'X' TO MEMORY ID 'A123'.
    ENDIF.
  ENDIF.
ENDIF.
i am exporting the variable and importing in the below exit.
in ZXM06U43 in exit EXIT_SAPMM06E_012  i have written the code
IF sy-mandt = 888.
  DATA: gv_check TYPE xfeld,
  IF sy-tcode = 'ME22N' OR
     sy-tcode = 'ME22'.
    IMPORT gv_check FROM MEMORY ID 'A123'.
    IF gv_check = 'X'.
      MESSAGE e000(z1) WITH 'No manual LA Allowed'.
    ENDIF.
  ENDIF.
ENDIF.
but the value is not getting imported and actually when i press the save button, the EXIT_SAPMM06E_012  is called first and then goes to EXIT_SAPMM06E_013 and my PO gets saved.
how to solve this issue.
Regards,
Sakthi.

Answer 1

Why do you want to do validation in EXIT_SAPMM06E_013 and err message in EXIT_SAPMM06E_012?
Do an validation in EXIT_SAPMM06E_013 FM itself.
the below statement is wrong
EXPORT gv_check = 'X' TO MEMORY ID 'A123'.
gv_check  = 'X'.
EXPORT gv_check TO MEMORY ID 'A123'.
Regards,