When we receive SA refunds for clients the 'detail' field usually only contains 'HMRC SA' and no other information. This we have noticed since we changed banks (to Metro Bank) as with Santander this was not an issue. I don't know if this is only an issue with Metro, but it seem that because HMRC use a comma in the details field anything after that gets 'dropped'.
Has anyone else, with other banks, had this issue? I know this is a somewhat esoteric question and a week or so later we ge the paper notification anyway, but I just find it mildly irritating as I'd rather get these things processed and out quickly.