2.2.2.17 SecurityPrincipalNameProperty
The SecurityPrincipalNameProperty type represents a security principal name (SPN).
Simple type: eDT_LPWSTR. It is represented as an LPWSTR or LPCWSTR type, as specified in [MS-DTYP] section 2.2.36, when used as a method parameter.
Validity: MUST be a security principal name.
Server validation: Servers MAY enforce validity constraints. Servers MAY enforce an implementation-specific character length limit. If so, this limit SHOULD be at least 255 characters, not including the terminating null character.
Client validation: Clients SHOULD simply pass through the value provided by the client application.