Block the creation of candidates who already have a phone number registered in the system

How can the Phone field be configured as the primary key for candidate creation and have the system validate that a candidate is already registered with that same phone number, just as is currently the case with email?

Steps:
1.- My Client Groups / Hiring / Candidate Search
2.- Create Candidate

You can block the creation of candidates who already have a phone number registered in the database, just as email validation does. If one exists, the system will send you a message and prevent you from creating the candidate.

Version: Oracle Fusion Cloud Applications25B (11.13.25.04.0)