From the CPPM documentation, it states the following about the SAN field in the CSR generation process:
Subject Alternate Name (SAN)
Alternative names for the specified Common Name. Note that if this field is used, then SAN has to be in the form email:email_address, URI:uri, IP:ip_address, dns:dns_name, or rid:id.
This field is optional.
Do not use spaces between the fields or any other delimiter besides commas. Here are some examples of using this format:
SAN field with two DNS names:
SAN field with two IP addresses:
Combination of both: