When the plat or map is completed, it shall
be certified by a registered land surveyor and the owner or agent
who has prepared it. At or before the time of offering the plat or
map for record, the plat or map must be acknowledged before some person
authorized to take acknowledgment of deeds. A certificate of such
acknowledgment shall be endorsed on the plat or map. The certificate
of the survey and acknowledgment shall also be recorded and form a
part of the record.