Hi Akshit,
Sorry to say but if you are unable to fetch the documents or a caste certificate required to be eligible for GEN-EWS then your GEN-EWS will not be applied and the benefit of GEN-EWS will be withdrawn from you and your will taken as a general category candidate. If you don't have the documents then you cannot do anything reagarding GEN-EWS.
I hope this was helpful.
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