SWIFT ISO 15022 - Code PRSE Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Pre-Confirm Securities: Pre-confirmation of the movement of the securities pending the movement of cash. Usages Message type Field number Tag MT544 (Receive Free Confirmation) 5 22a (Indicator) MT545 (Receive Against Payment Confirmation) 5 22a (Indicator) MT546 (Deliver Free Confirmation) 5 22a (Indicator) MT547 (Deliver Against Payment Confirmation) 5 22a (Indicator)