My requirement is to validate the purchase group (pur groups for all the line items should be one and the same). I am using the exit 'EXIT_SAPLMEREQ_008' of the enhacement 'MEREQ001' to raise an error message if any of the pur. group of the purchase requisition (ME51N, ME52N and ME53N) is different. If I save the PR by giving different purchase groups for teh first tiime then i am prompted with an error message. If for the next time if i change teh pur. groups to be similar and then save then the internal table of the exit is not updated with the changed values of the screen, in turn will have the same earlier values and hence the error message is displayed again or sometimes a system error is prompted.
If any one of you have come across this kind of situation and have resolved the problem then please help me out to do teh same.
Note: I am working on 4.6C
This is my second post for the same requirement. Hope, this thread will give me the solution.
Thanks and regards,