SWIFT ISO 15022 - Code REBE Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Registered to Bearer: Change from registered into bearer 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)