SWIFT ISO 15022 - Qualifier BASE Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Block Matching Reference Usages Message Type Tag Name of the tag MT509 20C ( field number 7 ) Reference MT514 20C ( field number 10 ) Reference MT515 20C ( field number 9 ) Reference MT518 20C ( field number 8 ) Reference MT576 20C ( field number 37 ) Reference