Table Maintenance Generator - Events

Hello

I have a problem with table maintenace generator events. There is an event 05 existing for a custom table ZTABLE.

There is a event routine fill_values existing for this event and the event perform as wellas the function group are active in the function group.

Even then there is a dump saying the perform 'FILL_VALUES' doesn' exist. Could it be that the table maintenance view was changed sometime in the past and that is the reason for this dump? Does any one of you have any idea what could be the cause?

Thanks in advance

Aruna