How to Identify areas that are calling the EMPS REST API ?

Summary:

Need to Identify areas that are calling the EMPS REST API – customized Alerts, ATOM feed handlers, OIC, and other custom integrations as the EMPS (Employees) REST API resource will no longer be supported.

Content (required):

Transition to the Workers REST API from EMPS REST API prior to receiving Update 23D

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

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