| Type : boolean |
| Definition |
| When 'true', the availabilty of this extra needs to be checked; when 'false' the extra is available. |
| Parents |
| \OTA_PkgCostRS\AvailableExtras\AvailableExtra\Criteria
\OTA_TourActivityAvailRS\TourActivityInfo\Extra\Rule\OtherCriteria |