The diagram below illustrates the ancillary workflow to add ancillaries to an existing reservation, or during ticketing. Adding ancillaries is not supported in the initial booking session.
Payment and EMD Workflow for Seats and Ancillaries
For all GDS and some NDC carriers, you must commit the booking workbench to confirm the seat or ancillary, and then create a new workbench to send payment and issue the EMD. Payment and EMD in the same workbench as booking is supported only for specific NDC carriers. For ancillary requirements by NDC carrier, see NDC capabilities by airline through TripServices API in the Travelport Knowledge Base. (If you need login assistance, see Knowledge Base NDC Resources.)
Each box in the diagram represents one API call in the workflow.