[Below briefly focus on Sample Admission Rejection Letter Format from the principal, director of the school/college after entry test or interview of the candidate for a vacant position or advertised job. You need to modify it according to your company or institute needs.]
Additional information (I.D./Registration no.)
Sub: Admission Rejection Letter
Dear (Candidate name),
This letter is a notification about your admission proceeding against your application to the School of Engineering (Institute and Subject name), Department of Industrial Engineering (Department name) at this university. Your application has been thoroughly reviewed by the admission committee but did not pass the final review just because of a limited number of the seats against the program. (Describe Actual problem and situation).
Please note that this program is highly competitive and this decision doesn’t question your research quality at all.
Best of luck for your future.