SWM

Hi, I am entitled to the split-year treatment for the tax year 2021-22. My self assessment tax return was submitted online, listing only incomes after I had become a tax resident, and I have already paid my taxes. I However, I stumbled upon this thread just now and was surprised to learn there’s a form SA109, in which, specifically, there’re questions about tax residency other than that of U.K.(Qs 18 &19). I believe those questions were not in the online form I filled in. My question is whether I need to fill out that form now even if I’m not claiming remittance basis or double taxation relief.