| Description |
| Used for Numeric values, from 1 to 4 inclusive. |
| Type : Numeric1to4 |
| Definition |
| The coupon number. |
| Parents |
| \OTA_AirCheckInRQ\PassengerInfo\TicketingInfo\CouponInfo
\OTA_AirBookModifyRQ\AirBookModifyRQ\EMD_Info\TaxCouponInformation\TicketDocument |