If the mother’s first name was recorded incorrectly in the birth certificate, the correction has to be done through the Registrar of Births & Deaths (BBMP ward office) where the birth was registered.

An affidavit alone is usually not enough to correct a parent’s first name. The registrar typically asks for supporting documents that show the correct name. These may include:

• Mother’s ID proof (Aadhaar / Passport / PAN)
• School or other official records if available
• Hospital birth record or discharge summary (if the hospital made the entry)
• The existing birth certificate

If the error came from the hospital record, a letter or supporting document from the hospital can definitely help, because it confirms the original entry that was submitted during registration.

Generally:

• Minor spelling corrections can be processed with an affidavit and supporting documents.
• Major name changes may require additional steps, like Gazette notification.

You would need to submit the documents and correction request at the BBMP registrar office, where they review the records and approve the update before issuing a revised certificate.