属性

数据类型ID

必须?Optional

Codes (7)

• 1First class, Highest class of service (First Class Category)
• 2Second class, Medium class of service (Business Class Category)
• 3Third class, lowest class of service (all economy/coach class categories)
• 4Economy/coach premium
• 5Economy/coach
• 6Economy/coach discounted
• 7All