Enterprise Business Systems (EBS) - Portal - Login Error: "The following ABAP Exception occurred: USER_NOT_FOUND"

Problem

Upon logging into the EBS Portal you receive an error message "The following ABAP Exception occurred: USER_NOT_FOUND"

Environment

Enterprise Business Systems (EBS)

Resolution

Contact IT Service Desk at (517) 432-6200 to have an incident ticket created.

Cause

You have portal roles but no roles are given in SAP ECC.