Not sure as I lack an account. There&#x27;s <i>appears</i> to be some guidance from SWIFT themselves.<p><a href="https:&#x2F;&#x2F;www2.swift.com&#x2F;uhbonline&#x2F;books&#x2F;hub&#x2F;httoc.htm" rel="nofollow">https:&#x2F;&#x2F;www2.swift.com&#x2F;uhbonline&#x2F;books&#x2F;hub&#x2F;httoc.htm</a>