Hello Aspirant,

If you don't have your reserved category certificate for your reserved category right now then you can submit the undertaking which declares that you will submit the original and valid caste certificate later on at the time of admission, failing which your candidature will be cancelled and you will be not be allowed to take part in any further process. You can download the undertaking from the official portal of CAT, for which link is also given below :-

https://cdn.digialm.com//per/g01/pub/756/ASM/WebPortal/17/PDF/UNDERTAKING_CAT_2020.pdf

Above link consists of a PDF file which is of self undertaking and you have to take a print of it and after filling it up properly and correctly without any errors you have to upload the scanned copy of it.

You can also use CAT Pathfinder to predict your chances to get call from different IIMs and Non-IIMs :-

https://bschool.careers360.com/pathfinder/cat

I hope this information helps you.

Good Luck!!