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If your caste category on the allotment letter for AP EAMCET is incorrect, reach out to the AP EAMCET examination authorities or the relevant admissions office as soon as possible. They should be able to guide you through the process of correcting your category. You can typically find their contact details on the official AP EAMCET website.

If there's a designated help desk or support center for admissions or counseling, visit them in person with all your relevant documents. They can assist you with the correction process.

Or you can prepare a written request for correction, including details such as your application number, roll number, and a clear explanation of the error. Attach any supporting documents, such as your caste certificate, to substantiate your claim.

Ensure you have all necessary documents, such as your original caste certificate, to prove your category. This will be crucial for making the correction.

After submitting your request, follow up regularly to ensure that the correction is processed. Keep records of all communications and submissions for your reference.