Hey! If you have forgotten your 10th roll number or lost your certificate, you can get a duplicate copy. Visit your school first, they will guide you about the process. Usually, you need to apply through your respective board’s website (like CBSE, ICSE, or State Board) and submit details such as your name, father’s name, year of passing, and school code. Some boards also provide online roll number search option. Once you apply, the board will issue a duplicate marksheet or roll number slip.