Reissue vs Revalidation-How to check if airline accept revalidation

In Amadeus, Sabre, or Travelport Galileo, you typically deal with either Reissue or Revalidation when making modifications to an issued ticket. Despite their similar sounds, these two terms are crucial to a ticket agent’s daily work.

What is Revalidation?

Revalidation means updating the existing ticket without issuing a new one.
The ticket number stays the same, and there is no full fare recalculation.

We normally use revalidation in situations like:

1) Schedule Change
If the airline changes the flight as indicated by the PNR, but the original flight remains indicated on the ticket, it may be necessary for the ticket to be revalidated.

2) Class Upgrade (in some airlines)
Sometimes, when upgrading to a higher booking class, revalidation is allowed instead of reissuing the ticket. This depends entirely on the airline policy.

3) Restoring a segment cancelled by mistake
If a segment was removed accidentally and then added back, revalidation might solve the mismatch — but again, only if the airline supports it.

Not all airlines allow revalidation in these cases, so it’s always better to check first.

In Amadeus, you can verify if revalidation is permitted using:

HEETTMS: MS air the airline

What is Reissue?

Reissue is different. It means you are financially rebuilding the ticket.

You must reissue when the passenger requests changes that affect pricing or routing, such as:

Changing the flight number
Modifying the route
Changing travel time beyond permitted limits
Changing the date outside the original fare conditions

In these cases, the system recalculates the fare.
There may be a fare difference, and a change penalty may apply.
A new ticket is issued financially.

Reissue is not just a correction — it’s a full ticket adjustment.

In Simple Terms

Revalidation = technical update.
Reissue = financial reprocessing.

Knowing when to use each one saves time, avoids ADM risks, and keeps your ticketing clean and compliant.