String comparison in table maintenance generator

Hi all,

I want to check for duplication of strings in a table maintenance generator.

I have 2 fields in my custom table, material number MATNR and material description MAKTX. Now the requirement is that whenever the material description is the same for any material, then a message should be popped up stating that the description already exists.

MATERIAL                         MATERIAL DESCRIPTION

P001                                        glucose biscuits

P002                                        cream biscuits

P003                                        glucose biscuits

Since the description of P001 and P003 are the same, the message has to pop up. In other words, no material can have the same description.

I searched for similar threads but I didnt seem to find something similar to my issue. I have to write the code in the event of my TMG .

Regards.

Manish