Correcting a Birth Certificate. You may not need a court order if you only want to correct a "mistake" on your birth certificate.Complete and sign the appropriate birth certificate form. Enclose original documents to support the amendment. The Suffolk County Clerk's Office does not maintain Birth, Marriage or Death records; rather this is a function of the Town Clerk and or Registrar. Be careful when you fill out your baby's full name and your mailing address. Correcting a birth certificate can cost money or even require a trip to court. We do not issue certificates for Nassau, Suffolk or other counties in New York State. You can also correct an issued birth or death certificate. Welcome to the Suffolk County Clerk's Office.