Hello Aspirant,Hope you are doing well

Candidates are required to upload the requisite documents after entering their details in the DUET 2022 application form. These documents include scanned images of their documents such as passport size photograph, signature, self-attested copies of Class 10 and Class 12 marksheet, caste certificate and Sports/ECA certificates (if applicable).

Caste certificate defines the caste of the particular candidate and non creamy layer certificate defines the income of the particular candidate and they have granted with the reservation under particular quota.So if non creamy layer was applied on you then you can upload that particular certificate.

For further details visit this

https://news.careers360.com/duet-2022-delhi-university-begin-du-pg-admission-registration-soon-how-apply-documents-required-du-ac-in

Hope this helps you

ALL THE BEST