CAA Resource record is used to specify which certificate authorities (CAs) are allowed to issue certificates for a domain. CAA Resource Records, the new requirement in SSL validation process, allow a Certification Authority to implement additional controls to reduce the risk of unintended certificate mis-issue.  

The DNS CAA Resource Record look like this:  

rvglobalsoft.com. CAA 0 issue "symantec.com"  

CAA Record will relate to a brand who issued the certificates. Then publish the generated DNS records on your domain's DNS