Roles transaction authorization

Hi

Please clarify me the below

My client requirement - NO PA30 authorization(no maintain master data) to one user, who are having PA20 and PA40 authorization.

In PA40 , one customized infotype shows showing error "having authorization to PA30".

how can i rectify this issue. I checked the customized infotype fully. But PA30 authorization is not mention there.

Please clarify me to solve this issue. Waiting for reply

regards

satya