California Code, Government Code - GOV § 66470

The amending map or certificate of correction shall be prepared and signed by a registered civil engineer or licensed land surveyor.  An amending map shall conform to the requirements of Section 66434, if a final map, or subdivisions (a) to (d), inclusive, and (f) to (i), inclusive, of Section 66445, if a parcel map.  The amending map or certificate of correction shall set forth in detail the corrections made and show the names of the fee owners of the real property affected by the correction or omission on the date of the filing or recording of the original recorded map.  Upon recordation of a certificate of correction, the county recorder shall within 60 days of recording transmit a certified copy to the county surveyor or county engineer who shall maintain an index of recorded certificates of correction.

The county recorder may charge a fee, in addition to the fee charged for recording the certificate of correction, which shall be transmitted to the county surveyor or the county engineer, as compensation for the cost of maintaining an index of recorded certificates of correction.  The amount of this additional fee shall not exceed the fee which is charged for recording the certificate of correction.

If the property affected by a map is located within a city, the county recorder shall, upon request of the city engineer, provide copies of recorded certificates of correction to the city engineer.