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Amadeus SB Command: Modify Itinerary Segments Guide (2026)

Amadeus SB command modify itinerary segments guide for travel agents

Amadeus SB โ€” Modify Existing Itinerary Segments

A complete guide to the Amadeus SB command โ€” how to modify booking classes, travel dates, airlines, flight numbers, and specific itinerary segments in an existing PNR.

โšก Key Takeaways

  • SB modifies existing segments โ€” change class, date, airline, flight number, or any combination.
  • Use SBY to change all segments to class Y, or SBC2,5 for specific segments.
  • Date changes use the day-month format: SB19JUN for all segments, SB18AUG4 for segment 4 only.
  • Rebook directly from an availability display with SB3*2 โ€” point at the flight, don’t retype it.
  • Always check TST and seat requests after modifying โ€” they may be invalidated and need clearing with TTE and SX.

Once an itinerary has been booked, changes are inevitable. A customer wants to travel a day later, a higher class becomes available, an airline reschedules a flight, or a segment is moved to a different carrier. The Amadeus SB command is the entry that modifies existing itinerary segments in place. It allows you to change the booking class, the travel date, the airline, the flight number, the seat quantity, or any combination of these โ€” without cancelling and rebooking the segment manually.

What Does the Amadeus SB Command Do?

SB is the Amadeus GDS command used to modify booking classes, travel dates, airlines, flight numbers, and specific itinerary segments.

Category: PNR Management.

The Amadeus SB command allows you to rebook existing itinerary segments by changing the class of service, travel date, airline, flight number, or seat quantity. Because the change is applied directly to the existing segment, the rest of the PNR โ€” passengers, other flights, seat requests, TSTs โ€” remains as it was, unless the change invalidates them.

Amadeus SB Command โ€” Change Booking Class

The most common use of the Amadeus SB command is changing the booking class of one or more segments. The class is entered as a single letter before the segment number.

Change the booking class of all segments to Y:

SBY

Change the booking class of segment 2 to C:

SBC2

Change the booking class of segments 2 and 5:

SBC2,5

Change the booking class of segments 3 through 6 to Y:

SBY3-6

Change each of several segments to a different class in one entry:

SBY2/C4/M5

Segment 2 becomes Y, segment 4 becomes C, segment 5 becomes M โ€” all in a single SB entry.

Amadeus SB Command โ€” Change Travel Date

The Amadeus SB command uses a day-month date format (like 19JUN) to move a segment or an entire itinerary to a new travel date.

Change the date of all segments to 19 June:

SB19JUN

Change the date of segment 4 to 18 August:

SB18AUG4

Change the dates of segments 2 and 4 to 14 May:

SB14MAY2,4

Change the dates of segments 3 through 5 to 18 April:

SB18APR3-5

Change segments to different dates in one entry:

SB3AUG2/4AUG3

Segment 2 becomes 3 August, segment 3 becomes 4 August โ€” both in a single SB entry.

Amadeus SB Command โ€” Change Class and Date Together

The Amadeus SB command accepts both a class letter and a date in the same entry, so you can move a segment to a new class and a new date in one step.

Change the booking class and date for segment 4 โ€” class F, date 19 December:

SBF19DEC4

Amadeus SB Command โ€” Change Airline and Flight Number

When a segment needs to move to a different carrier or flight number, the Amadeus SB command accepts the airline code, flight number, an asterisk as the separator, and the segment number โ€” plus optional class and date indicators.

Change the airline and flight number for segment 3 to BD194:

SBBD194*3

Change the airline, flight number, and class for segment 3 โ€” BA349 in class D:

SBBA349*D3

Change the airline, flight number, class, and date for segment 4 โ€” BA352 in class Y on 01 June:

SBBA352*Y01JUN4

This is the most complete SB variation โ€” every segment attribute changes in a single entry.

Amadeus SB Command โ€” Rebook from an Availability Display

One of the most practical uses of the Amadeus SB command is during schedule changes: you display availability, find the flight you want, and point at it directly instead of retyping the airline, flight number, and date.

Change segment 2 to the flight shown on line 3 of an availability display:

SB3*2

The first number is the availability line number; the second is the segment being changed.

Change the class of service for segment 5 using the flight on line 4 of an availability display:

SB4*C5

When to Use the Amadeus SB Command

Use the Amadeus SB command when you need to rebook or modify an existing itinerary by changing the booking class, travel date, airline, flight number, or specific segment. Typical scenarios include:

  • Upgrading a passenger to a higher booking class.
  • Moving the entire itinerary to a new travel date.
  • Changing the date of one or more specific segments.
  • Switching a segment to a different airline or flight number.
  • Rebooking after a schedule change using the availability screen.
  • Adjusting the class of service to obtain a lower fare before pricing with FXB.
  • Rebooking seats for passengers whose itinerary has been modified.

How It Fits Into Your PNR Management Workflow

A typical itinerary modification session using the Amadeus SB command might look like this:

  1. Retrieve the PNR and confirm the segments you need to modify.
  2. Check seat requests โ€” if the change affects an aircraft or date, cancel seats with SX first.
  3. Enter the appropriate SB entry for the change you need.
  4. Verify the segment was updated correctly by redisplaying the PNR.
  5. Reprice the itinerary if the change affects the fare โ€” with FXP, FXR, or FXB.
  6. Reassign seat requests if required.
  7. Issue the ticket with TTP once everything is correct.

Amadeus SB Command โ€” Quick Reference Table

Command What It Does
SBYChanges the booking class of all segments to Y
SBC2Changes the booking class of segment 2 to C
SBC2,5Changes the booking class of segments 2 and 5
SBY3-6Changes the booking class of segments 3 through 6 to Y
SBY2/C4/M5Changes multiple segments to different classes in one entry
SB19JUNChanges the date of all segments to 19 June
SB18AUG4Changes the date of segment 4 to 18 August
SB14MAY2,4Changes the dates of segments 2 and 4 to 14 May
SB18APR3-5Changes the dates of segments 3 through 5 to 18 April
SB3AUG2/4AUG3Changes segments to different dates in one entry
SBF19DEC4Changes the class and date of segment 4
SBBD194*3Changes the airline and flight number for segment 3
SBBA349*D3Changes the airline, flight number, and class for segment 3
SBBA352*Y01JUN4Changes the airline, flight number, class, and date for segment 4
SB3*2Changes segment 2 to the flight on line 3 of an availability display
SB4*C5Changes the class of segment 5 using the flight on line 4

How the Amadeus SB Command Relates to Other PNR Commands

The Amadeus SB command is part of the PNR management toolkit in Amadeus. Here is how it relates to the others:

  • SB โ†’ modifies existing itinerary segments.
  • SS โ†’ sells new segments from availability.
  • XE โ†’ cancels individual segments.
  • XI โ†’ cancels the full itinerary, including MCOs.
  • SX โ†’ cancels seat requests.
  • DL โ†’ deletes a segment with an inactive status code.
  • RP โ†’ changes the responsible office and related assignments.
  • RH โ†’ displays PNR history, including all SB modifications.

Important โ€” Check TST and Seats After Every SB

Any change to a booked segment may invalidate the existing TST and any seat requests on that segment. After using the Amadeus SB command, always check whether a TST is stored in the PNR and whether it needs to be deleted with TTE and recreated after repricing.

Seat requests tied to the modified segment will usually need to be rebooked with SX and ST. Ignoring this step is one of the most common causes of ticketing errors after an itinerary change.

Official Amadeus Documentation

For the authoritative reference on PNR management and Amadeus itinerary modification, refer to the Amadeus Altรฉa Suite documentation โ€” the official source for all Amadeus PNR commands including SB, SS, XE, XI, and DL.

Frequently Asked Questions About the Amadeus SB Command

What does the Amadeus SB command do?

The Amadeus SB command modifies existing itinerary segments by changing the booking class, travel date, airline, flight number, or seat quantity.

What does SBY3-6 mean?

SBY3-6 changes the booking class of segments 3 through 6 to Y in a single entry. It is one of the most common uses of the Amadeus SB command.

How do I rebook using an availability display with the Amadeus SB command?

Display availability, note the line number of the flight you want, then use SB3*2 โ€” where 3 is the availability line number and 2 is the segment you are changing.

Will the Amadeus SB command delete my TST?

SB does not delete the TST, but the change may invalidate it. Always check the TST with TQT after modifying a segment, and reprice if needed.

Do I need to cancel seat requests before using the Amadeus SB command?

If the change affects the aircraft, the date, or the flight number, cancel seats with SX first โ€” otherwise the system may reject the change or lose the seat items.

Conclusion

The Amadeus SB command is the itinerary modification tool in Amadeus. Use SBY to change all segments to a new booking class, SB19JUN to move the whole itinerary to a new date, SBBA352*Y01JUN4 to change the airline, flight number, class, and date on a specific segment, and SB3*2 to rebook directly from an availability display.

The Amadeus SB command is essential for schedule changes, upgrades, date changes, and rebooking. Because any modification can affect seats and pricing, always check the PNR afterwards, clear seat requests with SX if necessary, reprice with FXP or FXR, and issue with TTP once everything is correct.

Paired with SS, XE, XI, SX, and RH, the Amadeus SB command completes your PNR management toolkit and keeps every booking accurate from initial sale to final ticket.

Want to Practice the Amadeus SB Command?

Open our free GDS terminal simulator and run SB, SS, XE, XI, and every other PNR command in a safe, risk-free environment.