N.C. Gen. Stat. § 161-20: Certificate of survey registered.

It shall be the duty of the register of deeds in each county, when any grant is presented for registration with a certificate of survey attached, to register such certificate of survey, together with all endorsements thereon, together with said grant, and a record of any certificate of survey so made shall be read in evidence in any action or proceeding: Provided, the failure to register such certificate of survey shall not invalidate the registration of the grant. (1905, c. 243; Rev., s. 2663; C.S., s. 3559.)