Category 1 (Eligibility) provides the capability to further define the passenger for whom the fare applies.

Category 1 is a supplement to the Fare Class Application further defining the passenger. If a passenger type codes does not have additional eligibility requirements, then it should be coded in the Fare Class Application only and not repeated in Category 1.

How to Link Eligibility and Security Data
Option 1 – Category 15 IF Category 1
Option 2 – Category 35 IF Category 1
Option 3 – Category 1 IF Category 15