Delhi University (DU) has opened online registration for the Common Seat Allocation System (CSAS) DU PG Mid-entry 2023. Candidates who missed the deadline can now apply through the Mid-Entry process on the official website. The application process will be open until September 9. Once a seat is allocated, it is mandatory for the candidate to accept it. The seat allocation is final and will not be upgraded in subsequent rounds. Applicants must pay a registration fee of Rs. 1000.