1) merely because place of your birth has changed from belgaum to belgavi would not be problem in issue of passport and other documents
2) if name of your parents have been spelled incorrectly in birth certificate you have to make application to registrar of Birth fMuncipal corporation or correcting spelling mistakes . submit Annexure E affidavit of your father , mother mentioning correct name
3) for entry of your name in birth certificate you have to fill in name inclusion form . enter in all the details and submit it to registrar office . fill in all the details like Baby Name, father,mother Name, address details and sign on the back of the form…
As mentioned in that form – for 0-6yrs – no documents are required, for 7-15yrs – School certificate is required.