The
Primary Username
attribute
controls the formatting that is used in logs and reporting. If the
primary username attribute is
userPrincipalName
(UPN),
all the log and reporting entries display the source user in that
format. Many deployments use a format of either UPN,
sAMAccountName
,
or
mail
. If your organization uses another
attribute, you can specify it here to ensure consistency for logging
and reporting across your organization.