Can we add DFF in Create Invoice page in Supplier Portal?

Summary:

Is it possible to add descriptive flexfield in the Supplier Portal in the "Create Invoice" page?

Content (please ensure you mask any confidential information):

The business would like to add additional field that will be named as "Total Invoice Amount" in the "Create Invoice" page via supplier portal wherein the supplier can input the total invoice amount in the mentioned additional DFF.

Version (include the version you are using, if applicable):

Oracle Fusion Cloud 24A

Code Snippet (add any code snippets that support your topic, if applicable):

Here is the page where to add the DFF: