Why Code attribute is blank for Primary Work Locations and Other Work Locations fields?

While testing 23D feature - Oracle Search Within Recruiting List of Values, I have observed under offer information section following fields having code column is blank. 1. Primary Work Location 2. Other Work Locations.

Steps to reproduce: 1. Login as a Recruiter/Hiring Manager. 2. Go to My Client Groups > Hiring 3. Check any existing position based requisition. 4. Go to offer information section 5. Expand the following fields - Primary Work Location, Other Work Locations

The attributes/headers in 'Primary work Location' and 'Other work Locations' should be aligned as per search configuration - 'Locations - Oracle Search' but it is still having legacy search attributes not as global search attributes.