Error message in PR for material having stock above reorder point

Question

Hi Experts,
                  We want the error message while creating Purchase Requisition (ME51N) for a material which is having stock (MMBE)  above Reorder point ( MRP1 View of material master-MM03) .Is there any user exit available for this requirement.
    MAXIMUM STOCK LEVEL
     With reference to this thread i checked the user exit   MEREQ001 . But this exit will contain include ZXM02U01 Which is showing error message - program names ZX..are reserved for includes of exit function groups .I want to open this include if i want to write the code for the above req.
Regards,
RAHUL S

Answer 1

Hi Rahul,
you can ignore the message "program names ZX..are reserved ..." - because you are in such a reserved function module. Just create the include, active your coding and activate the exit (transaction CMOD) -> then you have an active implementation of an user-exit.
BR,
Christian