X_CANDIDATE_SOURCE is a fixed lexicon with the following values:
Saved
Value
Displayed Value
01 Self-Service Web
02 Self-Service Kiosk
03 Internal Applicant
04 Employee Referral
05 Manager Referral
06 Agency Referral
07 External Referral
08 Mailed in Resume
09 Walk-in
10 Open House
11 Executive Recruiting
12 College Recruiting
13 Government Service
14 Job Board
15 Hiring Campaign
16 Ads (Newspaper, TV)