Restrict Supplier from editing and cancelling Purchase Order in Supplier Portal

Summary:

Hi Community,

We would like to know if there is a standard Oracle Fusion configuration that can prevent suppliers from editing or cancelling Purchase Orders through the Supplier Portal.

Current requirement:

• Suppliers should be able to view Purchase Orders assigned to them.
• Suppliers should not be allowed to modify Purchase Order details.
• Suppliers should not be allowed to submit cancellation requests for Purchase Orders.

We have reviewed the supplier portal settings but would like to confirm:

1. Is there a standard setup, profile option, or privilege that controls supplier ability to edit Purchase Orders?
2. Is there a way to disable the "Request Changes" or "Cancel Order" actions for suppliers while retaining PO visibility?