Is it possible to limit the user account to one in the External Supplier Registration?

Summary:

We are now using the Redwood Next Gen Supplier Registration. The vendor has an access to add multiple contacts under Contacts section. If a vendor adds multiple contacts, is it possible to limit the user account selection to one? This is to prevent them from requesting multiple user accounts in Oracle.

For your expert advise.

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

Oracle Fusion Cloud 24D

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