How to find the un used fields belonging to Requisition, Candidate and Offer fields.

Summary: Like to know whether there is any way to find out the un used fields from Requisition, Candidate and Offer Fields. Attaching the list of fields for Requisition, Candidate and Offer Fields

Content (required): How to know the fields which are not being used from the Requisition, Candidate and Offer Fields.

Version (include the version you are using, if applicable):23A.1.2

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