Using user exit IF_EX_ME_PROCESS_PO_CUST

Question

Hi all,
I'm fairly new to SAP and would like your help in the following. I have a user who requires the ability to tick the Deliv Ind field (from the Delivery tab of ME22N screen)  but we do not want to provide him all the update access that ME22N provides. To this end I have developed a custom transaction which updates the indicator via a BAPI (BAPI_PO_CHANGE). When the user tries this transaction in the production or QA environment he gets the following Authorisation message from SU53:-
Authorisation check failed
   Object Class BC_A Basis: Administration
      Authorization Obj.S_CTS_ADMI Administration Functions in Change and Transport System
         Authorization Field CTS_ADMFCT Administration Tasks for Change and Transport System
Is there a way to overcome this bearing in mind we dont want to provide him full access to ME22N?
To overcome the above problem we had provided a role to the user which allowed the custom transation to succeed but also allows him full access to ME22N.
One suggestion that was made was to code a user exit for ME22N/ME23N  so that when the specific user clicks on the change button an error is displayed.
Any help would be most appreciated.

Answer 1

Hi Roberto,
yes. TRUE = ABAP_TRUE = 'X'.
In oo context you can almost always use ABAP_TRUE which is defined in type-pool ABAP as well. You can use
IF im_item->is_persistent( ) IS INITIAL. "New item
IF im_item->is_persistent( ) IS NOT INITIAL. "changed item
'persistent' means that it has been saved already, Merriam-Webster's says
per·sis·tent
adj pər-ˈsis-tənt, -ˈzis-
Definition of PERSISTENT
: existing for a long or longer than usual time or continuously: as
a : retained beyond the usual period <a persistent leaf>
b : continuing without change in function or structure <persistent gills>
Regards,
Clemens
Edited by: Clemens Li on Jan 14, 2011 1:24 PM