hiiii

1st you have to understand the difference between marksheet and graduation certificate.

The score card that you get at the end of every academic session is called a marksheet.

A document that is given after graduation to a student. It is a proof or document which is given to an individual after completion of any degree.

so you can't apply your 12th marksheet in the place of graduation certificate.

hooe you understand

this will helpful for you

all the best