csr attributes that are required or optional

 

CN	Common   Name	This is the fully qualified domain name (FQDN) that specifies the server’s exact location in the Domain Name System (DNS). For example, a component with hostname webBridge1 and parent domain example.com has the fully qualified domain name webBridge1.example.com. The FQDN uniquely distinguishes the component from any other components called webBridge1 in other domains.	Required, see notes below
O	Organization or Business name	Usually the legal incorporated name of a company. It should include any suffixes such as Ltd., Inc., or Corp. Use “” around the attribute if more than one word, e.g. “Example Inc.”	Optional
OU	Organizational unit or Department name	For example, Support, IT, Engineering, Finance. Use “” around the attribute if more than one word, e.g. “Human Resources”	Optional
L	Location	City or town. For example, London, Boston, Milan, Berlin.	Optional
ST	Province, Region, County or State	For example, Buckinghamshire, California. Do not abbreviate. Use “” around the attribute if more than one word, e.g. “New Jersey”	Optional
C	Country	The two-letter ISO code for the country where your organization is located. For example, US, GB, FR.	Optional
An email address		An email address to contact the organization. Usually the email address of the certificate administrator or IT department.	Optional
SAN	Subject Alternative Name	From X509 Version 3 (RFC 2459), SSL certificates are allowed to specify multiple names that the certificate should match. This field enables the generated certificate to cover multiple domains. It can contain IP addresses, domain names, email addresses, regular DNS host names, etc, separated by commas. If you specify this list you must also include the CN in this list. Although this is an optional field, the SAN field must be completed in order for XMPP clients to accept a certificate, otherwise the XMPP clients will display a certificate error.	Required   for XMPP server certificates or if a single certificate is to be used across   multiple components.  See note below. Note: XMPP server is not supported from version 3.0