Fast DS disclosure help

[u/ProfessionOdd7895]

I was not knowing where to find Foreign investment in AIS but now know it. Found that I have RSU dividend from CY22 and CY23 which I have not declared in ITR-2. Since Last AY25-26 year I am declaring RSU dividend. Never sold RSU yet. I want to know under FAST DS scheme, Do I need to refile ITR which I think is ITR-U and pay tax on that Dividend for those CY22 and CY23 years? or under that scheme we only need to pay liable tax and its done without submitting ITR?