Approval for adding new supplier

Hi,

One of the customer requirement is as follows:

We can create supplier via Purchase order module or Payables module. We would like new suppliers added to Oracle Finacials be approved by the procurement manager before buyers can use in creating purchase order. Is there a Workflow for Supplier approval that we can modify? If yes, how can we modify to support our business needs? If not, is this available in Release 12?

Can you please advise on this?

Thanks,

Balaji