Are you getting the error message "GetAWBFailed", "CheckAWBFailed" or "AgentStockFailed" trying to perform a booking?
All these errors are related to AWB issue in your request.
GetAWBFailed error is triggered when you perform a booking without AWB number and the Airline stock is empty.
CheckAWBFailed error is triggered when you perform a booking with an AWB number already used in Airline system.
AgentStockFailed error is triggered when you perform a booking with an AWB number which is not associated to your IATA Cass in airline system.