UBS implemented their own transaction codes into the swift transactions at the beginning of the comment tags (:86:)
It would be nice if Gnucash imported those information as well for the UBS related imports of mt940 files.
Info on the additional SAP codes:
https://www.ubs.com/ch/en/swissbank/business_banking/kmu/cash_management/electronical_payments/keydirect/buchungstextcode.html
and here is the list in german, english french and italian:
https://www.ubs.com/ch/en/swissbank/business_banking/kmu/cash_management/electronical_payments/keydirect/buchungstextcode/_jcr_content/par/linklist_946e/link.803814108.file/bGluay9wYXRoPS9jb250ZW50L2RhbS91YnMvY2gvc3dpc3NiYW5rL2J1c2luZXNzX2JhbmtpbmcvNzA3OTBfQnVjaHVuZ3N0ZXh0Y29kZXRhYmVsbGUucGRm/70790_Buchungstextcodetabelle.pdf