How to inactive business unit, so users can still view old invoices/payments, but cannot create new?

Summary:

Users are AP users of multiple business units, one business units is disabled recently and no new invoices/payments should be allowed for it, but users should still be able to search for existing invoices/payment for that business units.

How to "Inactive" the business unit during invoice or payment creations, but while in manage invoices/payments, still able to search invoices/payments of that business unit?

Content (please ensure you mask any confidential information):

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

Fusion 25C

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