Very special authorization issue

Question

Hello,
I have the following problem with authorizations:
Our inventory user, sometimes need to change the indicator "Unlimited" in tab Delivery of Purchase order document, in order to receipt more quantity than the one in the Purchase order document.
The user do that by double clicking in the field "purchase order" of "purchase order data" tab in the MIGO transaction.
The problem is that this user, must have only authority for this change, and no other in the PO document.
How is this possible ??
Thanks in advance.
Moderator message: please use more descriptive subject lines from now on.
Edited by: Thomas Zloch on Dec 2, 2010 12:56 PM

Answer 1

Hi,
I don't have any tutorial, we are here to help to get the idea, not to solve your query, but I will summarize the steps. Search the forum for tutorials(if available any).
Create authorization object using SU21. Follow these steps :
1)Create Z Object Class from the Application toolbar-->Create->Object Class
   Give Z name(Ex:ZCLASS).
2)Create Authorization Object from the Application toolbar-->Create->Authorization Object
   Give Z name(Ex:ZOBJECT) and give field name ACTVT and click on "Permitted Activities", check the check box "02 Change'.
Then implement the BADI MB_MIGO_BADI. Write the code to check the authority in method LINE_MODIFY as
"Write your field condition here say your field will be set as 'X',( the structure available here is CS_GOITEM )
"Say for example you want to check field CS_GOITEM-FIELD
IF CS_GOITEM-FIELD = 'X'.
    AUTHORITY-CHECK OBJECT 'ZOBJECT' ID 'ACTVT' FIELD '02'.
    IF SY-SUBRC <> 0.
      MESSAGE E000(ZSW) WITH 'You are not authorized to do this activity'.
    ENDIF.
ENDIF.
Note : Most of the MIGO fields will come in the above said BADI, if your requirement is not getting full filled with this BADI then search for some other BADI/Exit/Enhancement Point
Thanks & Regards,
Faheem.