GOV §66471: (a) If the subdivision is in unincorporated territory, the county surveyor shall examine the amending map or certificate of correction and if the only changes made are those set forth in Section 66469

(a) If the subdivision is in unincorporated territory, the county surveyor shall examine the amending map or certificate of correction and if the only changes made are those set forth in Section 66469, he or she shall certify to this fact on the amending map or certificate of correction. If the subdivision is in the city, such examination and certification shall be by the city surveyor or city engineer. (b) As to a certificate of correction, the county surveyor, city surveyor, or city engineer shall have 20 working days in which to examine the certificate of correction for compliance with Sections 66469 and 66470, endorse a statement on it of his or her examination and certification, and present it to the county recorder for recordation. In the event the submitted certificate of correction fails to comply with Sections 66469 and 66470, the county surveyor, city surveyor, or city engineer shall return it within the same 20 working days to the person who presented it, together with a written statement of the changes necessary to make it conform to the requirements of Sections 66469 and 66470. The licensed land surveyor or registered civil engineer submitting the certificate of correction may then make the changes in compliance with Sections 66469 and 66470 and resubmit the certificate of correction to the county surveyor, city surveyor, or city engineer for approval. The county surveyor, city surveyor, or city engineer shall have 10 working days after resubmission and approval of the certificate of correction to present it to the county recorder for recordation.