SWIFT ISO 15022 - Code CASHSET1 Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Cash Settlement Details Usages Message type Field number Tag MT504 (Collateral Proposal) 72 16R (Start of Block) MT504 (Collateral Proposal) 79 16S (End of Block) MT505 (Collateral Substitution) 64 16R (Start of Block) MT505 (Collateral Substitution) 71 16S (End of Block)