Central Administrative Tribunal Jammu bench issued a Judgment that read, Stand of General Administration Department and JKSSB upheld by the judgment of Hon’ble CAT dated 28.07.2021. Maximum prescribed qualification for Class-IV posts to be 10+2 as provided in the Advt. Notification No. 01 of 2020.
So basically, The maximum qualification required for JKSSB Class IV posts is 12th only and anyone having/claiming above qualifications then 12th is not eligible for the said posts.
Judgment by Central Administrative Turbinal Jammu Bench JKSSB Class IV eligibility

