SWIFT ISO 15022 - Code BERE Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Bearer to Registered: Change from bearer into registered form. Usages Message type Field number Tag MT564 (Corporate Action Notification) 51 22F (Indicator) MT565 (Corporate Action Instruction) 39 22a (Indicator) MT566 (Corporate Action Confirmation) 37 22F (Indicator)