Cannot Edit Invoice Received date of the Invoices Submitted from Supplier Portal

Summary

Cannot modify the Invoice Received date of the Invoices Submitted from Supplier Portal

Content

The Invoice Received date at Invoice Header is a read-only field for those Invoices that are submitted from Supplier Portal Page. In the current project , I have a urgent business need that should allow the Payable processors to edit the  Invoice Received date that are submitted from Supplier Portal. 

The sole purpose  is as follows

1) The suppliers are submitting invoices at a later date after creation of the invoice 

2) The payment due date should be calculated with the following respect

                                a)  the submission date of the supplier