We have created custom timer job in share point 2010.but we are getting error 

**job definition "job name", id  ed6b4720-67c3-4bbc-aa46-e98a2aa67202 not applicable, ignoring**

We are unable to find out error for the same in share point log.

Its web level timer job . and farm architecture is 2 WFE and 1 application server.