Remove one or more tags from your private CA. A tag consists of a key-value pair. If you do not specify the value portion of the tag when calling this action, the tag will be removed regardless of value. If you specify a value, the tag is removed only if it is associated with the specified value. To add tags to a private CA, use the <a href="https://docs.aws.amazon.com/privateca/latest/APIReference/API_TagCertificateAuthority.html">TagCertificateAuthority</a>. Call the <a href="https://docs.aws.amazon.com/privateca/latest/APIReference/API_ListTags.html">ListTags</a> action to see what tags are associated with your CA.