user principal name (UPN)

In the context of Tenant Management, the part of a user account that precedes a domain within the Itron Identity Service. The UPN format generally has the user's first name initial and the last name (elric@eastcitypower.com). Do not enter an email address for the UPN. An email address generally has both the first and last name of the user (edward.elric@eastcitypower.com).