Dear candidate mostly when you provide a designated details, you don't get the opportunity to shuffle it during the counselling. But yes when you think of EAMCET counselling, you initially provided your category to be BC-E so your details will be made accordingly. But yes, during the counselling into respective Institutions you can request to make the desired correction but the authority will not let you change it unless there is any discrepancy. You can still access the Helpline Centre and try to contact them requesting them to make the desired change.

Good luck!!