Regenerate enhancement for transaction ME21N

hi there,

In the transaction ME21N a user exit was implemented for purchase order screen to Tick a checkbox for a condition. It was for program : SAPLZ_FGAZETTE and screen 0100. It was working fine.

Now a SAP patch is applied and user exit is not working. When I see the properties of screen, it gives program: SAPLZ_FGAZETTE and screen <b>0200</b>

Looks like that the SAP Patch has changed the screen so how can I relink the user exit to these settings. Do I have to regenerate for the transaction ME22N.

Please advise.

Thanks,