To better understand which username to use where, please review this username matrix of frequently used applications. SAM most often looks like (lastf), UPN most often looks like (email@example.com). Epic Hyperspace (OneView) most often looks like (RVHlastf).
|Application||SAM (lastf)||UPN (firstname.lastname@example.org)||Epic (RVHlastf)|
|UKG Workforce Central||yes|
|Microsoft Office 365||yes|
|Epic Hyperspace (OneView)||yes|