Dear Aspirant,
For oc category students there is no need of caste certificate as they don't have any kind of reservation. If you belong to EWS category then you need to get EWS certificate during the phase of counseling.
refer the below link to know further details about eamcet:
https://engineering.careers360.com/articles/ap-eamcet
Hope you find the answer.
All the best !
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