reverse charges itc claim!

my transporter is unregistered.

he delivered me goods and made an invoice of Rs1000 in july month.

i filed july gstr3b.
and on behalf of my transporter I paid 5% reverse charges amount to Rs 50.

now i request all me elders CA here kindly guide me in filling gstr 2 july. like in which column i need to fill this transaction? and how do i claim itc on this rcm.

thanks.