SWIFT ISO 15022 - Code OWNT Financial acronyms The entire acronym collection of this site is now also available offline with this new app for iPhone and iPad. Meaning Type of Ownership Rejection: Type of ownership indicated is not correct. Usages Message type Field number Tag MT510 (Registration Status and Processing Advice) 12 24B (Reason) MT549 (Request for Statement/Status Advice) 17 24B (Reason)