Change of Validation Method

Currently only possible for Digicert products but Comodo products will be supported in the future.

After AddCertificate (initial order)

You can only switch from DNS or FILE methods to the EMAIL method. The maximum number of times that you can switch is 10 times within a span of 24 hours.

Update authmethod through ModifyCertificate

Command

command = ModifyCertificate
certificate = ...
sub = ...
authmethod = EMAIL
...

Update authmethod through ReissueCertificate

You can switch between DNS, File, or EMAIL methods. The maximum number of times that you can switch is 10 times within a span of 24 hours.

Command

command = ReissueCertificate
certificate = ...
sub = ...
authmethod = EMAIL|DNS|FILE
...