SWIFT ISO 15022 - Code SUMC Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Summary by Counterparty Usages Message type Field number Tag MT569 (Triparty Collateral and Exposure Statement) 29 16R (Start of Block) MT569 (Triparty Collateral and Exposure Statement) 62 16S (End of Block)