MT-TAG-21R

SWIFT MT field Request Reference.

Definition

Tag 21R (Request Reference) is used in response messages to point to the original query. Present in MT 195/196/198/199 (Queries) and some 9xx (Cash Management). Format 16x.

Origin

Defined in the SWIFT Standards MT User Handbook, maintained by SWIFT SC in Brussels with annual update (November release).

Example in context

:21R:QRY-2026-007 — answer to query QRY-2026-007.

Related terms

• MT tag 21 — sibling tag.