Disabling 'Change' and 'Delete' button in Attachment List in ME52N

Question

Hi Friends,
The reuqirement is this:
A user attaches doucments  ( using the Generic Object Services to attach document ) while creating/changing Purchase Requisition (ME51N / ME52N).
Now when any user goes to see the docuemnts attached to the PR, he selects the 'Attachement List' from the context menu, he should only be able to read it and should not be allowed to change or delete the document. For this we need to disable the 'change' and 'delete' buttons from the toolbar.
Awaiting your response.......
Regards,
Fawaz

Answer 1

Hi,
Probably you have uncommented the call to super class when you reimplement the method on child class (z class)
I just implement the same thing now and it worked for me. Take a look:
1 - Modify the SGOSATTR table by SM30, just write a Z class (in my case CL_GOS_SRV_ATTACHMENT_CREATE) .
2 - Create/inheridt a subclass (not a copy) in SE24 of the standard class.
3 - Implement the method CHECK_STATUS in the z class. Note that the call to method on super class came commented. You only uncomment if you want to also execute a standard code in the super class.
Here is my code:
method CHECK_STATUS.
NOTE - In my real implementation I have uncommented the code below because I want do standard code be executed before my own check.
*CALL METHOD SUPER->CHECK_STATUS
EXPORTING
   IS_LPORB  = IS_LPORB
   IS_OBJECT = IS_OBJECT
IMPORTING
   EP_STATUS = EP_STATUS
   EP_ICON   = EP_ICON
  Check for BUS2012 = Bussinnes Object for Purchase Order
  IF IS_LPORB.TYPEID = BUS2012
  Check authorization and disable create attachment item if the user does not have authority...
IF IS_LPORB-TYPEID = 'BUS2012'.
AUTHORITY-CHECK OBJECT 'Z_MM001' ID 'ACTVT' FIELD '01'.
  IF sy-subrc <> 0.
    ep_status = mp_status_inactive.
  ENDIF.
ENDIF.
endmethod.
Regards,
Alexandre