What's the difference between ACID CERTAUTH and acid CERTSITE?
CERTAUTH and CERTSITE are special acids used to own certificates that you want to share with more than one user. They are automatically created when you format the security file so you don't have to define them.
They are just predefined ACIDs with a specific purpose of being the owner of certificates that you want to share with multiple users.
CERTSITE is for personal, client, and site certificates.
CERTAUTH is for root certificates, intermediate root certificates, signing certificates.