Is it possible to restrict Payables users from editing invoice quantity beyond received quantity.

Summary:

Invoices created via the Supplier Portal are being processed by Payables users. During invoice processing, it has been observed that Payables users are able to modify the quantity field in invoice lines.

In certain cases, the invoice quantity is being increased beyond the received quantity (GRN quantity), which leads to a mismatch between the invoice and the actual goods received.

The business requires a control to restrict Payables users from editing the invoice quantity beyond the received quantity for supplier portal invoices.

Kindly review this requirement and advise if there is any standard functionality, configuration, or workaround available to achieve this restriction.