By IndiaHub 
One should apply for the re-issuance of an OCI Card :
If the OCI cardholder acquired an OCI card before the age of 20 years and has obtained a new passport after attaining the age of 20 years.
If the OCI card is lost or damaged. If there is a change in name for whatever reason, including a change in name after marriage. If there is a change in nationality, provided the new nationality is not that of Pakistan or Bangladesh. If there are any errors in the existing OCI card. The OCI cardholder needs to provide suitable proof for carrying out the necessary correction.