The requirement is to pass the Maker and Checker Audit rule for the Contract based Revenue entries.

Summary: The requirement is to pass the Maker and Checker Auditing rule for the PPM Contract based Revenue entries. 

This can be achieved by restricting the create accounting transfer to GL or Post GL option. For this we have created a customer role for PPM module and removed But users are having access to AR super user and the custom role is getting override and they are getting access.
Now the question is there any approval process for revenue, Validation process for revenue entries created through PPM module.

 I could see only the following for projectsBPMapprovals

PjrRequestSubmitRequestFYIComposite (11.13.22.04.0)FYIToResourceManagerHumanTask
PjtProjectPlanGateApprovalComposite (11.13.23.01.0)GateApprovalHumanTask1