SWIFT ISO 15022 - Qualifier QUAS Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Trading Session Indicator Usages Message Type Tag Name of the tag MT502 22a ( field number 18 ) Indicator MT502 22a ( field number 18 ) Indicator MT513 22a ( field number 35 ) Indicator MT513 22a ( field number 35 ) Indicator