Hello,

If you've lost a certificate, you can obtain a duplicate by following these steps:

1. **Contact the Issuing Authority**: Reach out to the institution or board that issued the certificate.

2. **Submit an Application**: Fill out a duplicate certificate request form, available online or at the institution.

3. **Provide Necessary Documents**: This may include an affidavit or FIR if required.

4. **Pay the Fee**: Most institutions charge a nominal fee for re-issuing certificates.

Hope this helps you,

Thank you