Hello, it means you want to cancel your seat. And as per the seat cancellation process for APICET counselling you need to approach  the AP ICET convener and need to submit the required documents for seat cancellation:

• cancellationn request letter and application form for cancellation of allotted seat
• Payment receipt
• Original receipt of certificate issued at the time of verification at the helpline centre
• Provisional allotment order

In case you are facing any issue, you must call the authorities to slove your problem. To know more, visit here:

https://bschool.careers360.com/articles/ap-icet-counselling

Thankyou

You have to entirely cancel your admission to get your certificates.

I hope my answer helps. All the very best for your future endeavors!