Itc Sez supplies

Dear Experts

we have Import n Export License, LUT also

we have purchased some goods Fy 1920, and adjusted the ITC in GSTR 3B,
and after few months we have sold those goods to SEZ customers with no tax In Invoice.
purchase value of those goods are around 2000000/- which ITC already we have adjusted in 3B returns.

now my query is..

now at the end of the year we have to reverse ITC??