Dear sir/madam,
I don't think there is anything called like state or central level EWS certificate . As far as I know you will get your EWS certificate if you fulfill all the eligibility criteria.
For information you can refer this link-
https://www.careers360.com/question-is-it-central-govts-ews-certificate-is-different-from-state-govts-ews-certificate-if-yes-how-to-obtain-central-govt-ews-certi
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