MT799
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SWIFT MT799 message, Category 7 free format.
Definition
The MT799 has no imposed field structure beyond references: field 20 (Transaction Reference), field 21 (Related Reference) and field 79 (Narrative) as free text. Authenticated via SWIFT BICs, it serves to pre-advise, confirm or coordinate before a binding instrument is issued; it is not itself a financial instrument.
Origin
Defined in the SWIFT User Handbook, Category 7 — Documentary Credits and Guarantees/Standby Letters of Credit (ISO 15022 / MT-FIN format), maintained by Swift.
Example in context
:20:FFM20260620
:21:DCREF20260620
:79:WE CONFIRM OUR INTENTION TO ISSUE AN MT760 SUBJECT TO...