NOT issue Cbse class 12 private candidate passing certificate
You should contact the cbse board or the head office since your migration and leaving certificate has not been issued. You should write a letter to the respective board head office for the issual of the above documents. The documents will be sent to you withing 4-8 days depending on your location and delivery of the post. You should also attest the above documents from a higher gazetted officer for admission into colleges and for counselling and verification process. You can also try contacting your college admin/principal who can contact the head office of cbse board and issue your documents as soon as possible.