Confidential by defaultEstablished 201072 Jurisdictions

Unique End-to-End Transaction Reference (UETR)

A UETR is a unique reference assigned to a qualifying cross-border payment message. It allows participating institutions to identify and track the same payment across the payment chain.

A UETR is a 36-character identifier, in the format of a universally unique identifier, that stays attached to a payment as it moves between banks. In SWIFT MT messages it travels in field 121 of the message header, and it is carried natively in ISO 20022 payment messages. Because every bank in the chain sees the same reference, it allows each of them to identify the same payment without relying on their own internal reference numbers.

The UETR is what makes SWIFT gpi tracking possible: participating banks report status updates against it, so the sender can see when the payment reached each institution, whether fees were deducted and when it was credited. For a payer chasing a missing transfer, the UETR is the single most useful piece of information to ask the sending bank for, because it lets the trace start from the exact message rather than from a description of the payment.

Not every provider shows the UETR to customers, and not every bank in a route participates in gpi tracking, so the reference does not guarantee visibility. Still, asking for it at the time of sending, and keeping it with the invoice and payment confirmation, saves time if the payment is later delayed, returned or short-paid. The delayed payments guide explains what to collect.

In practice

The UETR identifies a payment; it does not by itself reveal where the payment is. Status information depends on the banks in the route reporting against it.

Example

A supplier says a $75,000 payment has not arrived. The buyer's bank provides the UETR, and the gpi tracker shows the payment was credited to the beneficiary bank two days earlier. The supplier's finance team takes the reference to its own bank and finds the funds held for an invoice.

Commonly confused with

TermHow it differs
SWIFT GPIThe UETR is the reference attached to a payment. SWIFT gpi is the service that uses it to track and report on payments across participating banks.

See also

Go deeper

← All glossary terms

Page Last Updated: 02/Oct/2026