Where to store and print specific text on customer Accounts Receivable (AR) invoices?

Summary:

I’m using Oracle 25D, we have a business requirement to print supplier–customer specific text on Accounts Receivable invoices. The text should vary depending on the supplier–customer relationship and must appear automatically on the generated AR invoice.

We are looking for guidance on the best approach to achieve this in Oracle.

• Is there a standard field or setup where supplier–customer specific text can be maintained?
• Can this be handled through DFF (Descriptive Flexfields), customer profiles, or transaction sources?
• What is the recommended best practice to ensure the text is picked during invoice generation?

We would appreciate any suggestions or examples from similar implementations.