Rcm applicable or not on unregistered purchase

Brajbihari Gautam (63 Points)

19 September 2021  
Sir I am doing purchase taxable item from unregistered dealer .
1. Now Rcm is applicable or not .
2 . if applicable then ITC claim or not
3. if I m doing claim ITC then in my gstr 3b return Itc box not match with Gstr 2B

what I can do sir plz tell me