Hello Yash,

See undertaking is available for those candidates who don't have their valid reservation certificate at the time of application but can produce later on at the time of admission.

It is recommended that you should not make any correction in the undertaking for category certificate because the authorities are also well aware of the scenario that exams have been postponed due to the second wave of covid-19 and the same undertaking will be considered as valid until and unless NTA releases any new undertaking. Even if it will release any new undertaking and suppose you have already applied with the old undertaking then also your application with that undertaking will be considered as valid.

So If you don't have your reserved category certificate for EWS 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. You can download the undertaking from the official portal of NTA, for which link is also given below :-

https://jeemain.nta.nic.in/webinfo2021/File/GetFile?FileId=5&LangId=P

I hope this information helps you.

Good Luck!!