How do I request a seat in Amadeus (ST)?

ST/12C/P2/S5 requests seat 12C for passenger 2 on segment 5, ST/WB/P3 a window seat near the bulkhead, ST/NSSA a seat wish for everyone. RTSTR shows the seats and whether they are chargeable; SX cancels them.

Unofficial guide, written with AI

GateRoam's own guide, written in our own words with the help of AI tools. It is not official Amadeus documentation and has not been reviewed or approved by Amadeus. It can contain mistakes: try every entry in the Amadeus training office first, or check Amadeus's own help, before you use it on a live booking.

When

The client wants a particular seat, or just "window" or "aisle", on free seating.

Steps

#	Entry	What it does	Why
1	`ST/12C/P2/S5`	Requests seat 12C for passenger 2 on segment 5.	A specific seat.
2	`ST/WB/P3`	Window seat with bulkhead preference for passenger 3.	Preference only.
3	`ST/12A-D/S5`	A seat within 12A-D.	Families together.
4	`ST/NSSA`	Seat wish for all passengers on all (first five) segments.	Quick preference.
5	`RTSTR`	Shows the reserved seats and their characteristics.	Check, and see if chargeable.
6	`XE10` · `SX` · `SX/S2,3`	Cancels one seat element · all · those of segments 2-3.	Change the seat.

Check it worked

RTSTR lists the seat per passenger and segment, status HK.

Traps

If RTSTR shows CHARGEABLE, the seat needs an EMD to be kept (Paid seats — from the seat map to the EMD).
Seats are per segment: a rebooked flight needs a new request.
Airlines may reassign seats (aircraft change) — recheck before departure.

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