AP - Required Ability to Validate Invoice but not Enter/Create New Invoices

Hi,

We are implementing AP Module in EBS 11.5.10.2

As part of Responsibility Matrix, Business has put up a requirement to allow Invoice Validation to select few Users. However, due to SOX requirements, these users should not be able to Enter or Create new Invoices in AP. We are not using AME for Invoice Approval WF and Invoice Validation is the last approval before Payment.

Can you please advice how to achieve this requirement?

 Regards...Abhishek