I'm just trying to submit a P35 for a client via Moneysoft, but it was rejected by HMRC because apparently it was already submitted. I logged on to HMRC to see my client list, and it is indeed showing up as "last year submitted". Client insists that he didn't do it himself (and I believe him because he wouldn't know how to, and why should he!?) I know for a fact that I didn't submit it.
Could it be that someone submitted a P35 using a wrong PAYE reference, and submitted for my client instead of his? I suppose I could call HMRC, but they're on strike.
Anyone else had anything similar