Status: checked against official sources; automated independent review
FREQUENT FLYER GLOSSARY
What is an EMD (Electronic Miscellaneous Document)?
An EMD (Electronic Miscellaneous Document) is the airline document that records an ancillary service, a fee or a leftover amount of value that cannot be carried on the flight coupons of an electronic ticket. It sits alongside the ticket rather than replacing it, has its own document number and its own coupons, and comes in two types: EMD-A, which is tied to a ticket, and EMD-S, which stands alone. Industry standards for passenger ticketing and for interline passenger processing are published by the International Air Transport Association (IATA) in manuals such as the Ticketing Handbook and the Passenger Services Conference Resolution Manual. [1]
Facts checked: 18 October 2026
Key takeaways
- An EMD is a document in its own right, not a section of the ticket: the ticket's flight coupons record the journey, while the EMD records something sold or owed around it.
- EMD-A is associated with an electronic ticket and normally covers an extra bought with or added to a flight; EMD-S is standalone and can cover a service sold on its own or value left over after a change.
- Each EMD has its own number and its own coupons, so it can be open, used, refunded or exchanged independently of the ticket it belongs to.
Why a ticket sometimes needs an EMD
An electronic ticket is built around flight coupons, and each flight coupon stands for one segment that the passenger is entitled to be carried on. A fare, a routing and a cabin fit that structure neatly. A prepaid suitcase, a preferred seat, a lounge visit or a pet in the cabin does not, because these are sold around the journey rather than being the journey.
When an airline or a travel agent sells one of those extras, or collects an amount that is not part of the air fare itself, the transaction needs a document of its own. That is what the EMD does: it records what was sold, for whom, on which flight or date, at what price and under which conditions. It is also the record the airline works from when the passenger later asks for a refund, a change or a receipt.
The same need appears when money is left over. If a ticket is exchanged for a cheaper fare, or partly used and partly refunded, the balance may be held as credit rather than handed back in cash, and an EMD can be the document that carries that residual value forward. In both cases the EMD exists because the ticket has no room for the information.
What is the difference between an EMD-A and an EMD-S?
Airline systems divide EMDs into two document types according to whether the document is tied to a ticket.
| Document type | Linked to | What it usually covers |
|---|---|---|
| EMD-A (associated) | An electronic ticket, by e-ticket number | An ancillary service attached to a specific journey, such as extra baggage, a seat or a lounge pass |
| EMD-S (standalone) | Nothing; it stands on its own | A service sold without a flight, or an amount of value that has to be held separately from any ticket |
In EMD-A the letter A stands for associated and in EMD-S the S stands for standalone, so the type tells a check-in agent or a back-office system whether a ticket should be sitting behind the document. Because an EMD-A is linked to a ticket, it shares part of that ticket's life: the two are read together at the airport, and a change to the ticket can reach the EMD as well. An EMD-S has no such partner document, which is why it is the natural home for residual value that has to survive on its own.
How an EMD is put together
An EMD carries a document number of its own, separate from the number of the ticket it accompanies. That number is how the airline, the agency and the accounting system identify the record, and it is the number a passenger is asked for when disputing a charge or requesting a refund.
Inside the document sit one or more coupons, in the same spirit as flight coupons but for services rather than flights. Each coupon holds its own coupon status, so a single EMD can be partly consumed and partly unused — one bag flown, a second allowance still open, for example. The status is what tells the airline whether the amount may still be refunded or must be treated as used.
An EMD also states why it was issued, using the industry codes known as RFIC and RFISC. These codes let a system read at a glance what the document is for, instead of relying on a free-text description typed by an agent. Values, taxes and the form of payment are recorded on the document as well, and for an EMD-A the linked ticket number ties the two records together. IATA publishes the Passenger Services Conference Resolution Manual, which contains the resolutions for passenger and baggage processing in an interline environment, alongside the Ticketing Handbook described as the official guide to worldwide airline passenger ticketing. [1]
Limits and exceptions
- It is not a boarding document. An EMD never gives the right to be carried on a flight; that right comes from the flight coupons of the ticket, and an EMD-A is only ever read in support of them.
- Refundability is a property of the service, not of the document. Whether an EMD coupon can be refunded depends on the conditions attached to what was sold when it was issued, so two EMDs that look identical can behave differently.
- Value held on an EMD-S can carry its own terms. Where a standalone document holds residual value, the conditions set at the time of issue decide how and for how long the amount can be used.
- Reissuing a ticket can affect its EMD-A. If the ticket behind an associated document is exchanged or reissued, the EMD may need to be reissued or revalidated so the link between the two records survives.
- Many extras stay passenger-specific. Where a service is attached to a named traveller, the EMD cannot simply be passed to somebody else, even if the person who bought it is not flying.
- Some charges are documented elsewhere. An EMD is one way of recording an amount collected away from the fare; card and bank records, receipts and fare-rule entries can cover other amounts, which is why the absence of an EMD does not by itself mean nothing was charged.
Frequently asked questions
Is an EMD the same thing as an e-ticket?
No. The e-ticket holds the flight coupons that entitle the passenger to travel, while the EMD holds services, fees or value that the ticket structure cannot carry. The two documents are linked by number when the EMD is of the associated type.
Why was I given an EMD for a bag I paid for at the airport?
Because the bag is a separate service rather than part of the air fare, it needs a document of its own once the ticket has already been issued. The EMD is the record of what was bought and of the conditions attached to it.
What do EMD-A and EMD-S stand for?
Associated and standalone. An EMD-A is tied to an electronic ticket, usually for an extra bought alongside a flight, while an EMD-S is issued without a ticket behind it.
Can an EMD hold money left over from a change?
Yes. A standalone EMD-S is one of the ways an airline records a residual amount after a ticket is exchanged or partly refunded, rather than returning the difference in cash. The conditions attached at issue decide how that amount can later be used; see residual value.
Should I keep the EMD number?
Yes. The document number identifies the record when you ask for a refund, a receipt or a correction, and it is separate from the ticket number on your itinerary.
Sources
Sources checked on 18 October 2026. No individual airline or alliance programme is covered here, including United MileagePlus; what a particular carrier will sell on an EMD, and the refund and change rules attached to it, are set by that carrier.
- IATA Manuals, Standards & Regulations, checked 18 October 2026