Expenses Workflow Errors with is not a valid role or user name

Symptoms

The Expenses workflow errors out when sending the Inform Preparer Expense Report Approval Notification with Error:

Inform Preparer Expense Report Approval #EXCEPTION WFNTF_ROLE
3205: '' is not a valid role or user name.

Wf_Notification.SendGroup(, APEXP, MSG_EXP_REPORT_MGR_APPROVED, WF_ENGINE.CB)
Wf_Engine_Util.Notification_Send(APEXP, 19006, 61417, APEXP:MSG_EXP_REPORT_MGR_APPROVED)
Wf_Engine_Util.Notification(APEXP, 19006, 61417, RUN)

Cause

Workflow Tables are out of sync.

Solution

1. Please login to the System Administrator responsibility:
-Requests -> Run
-Name = 'Synchonize WF LOCAL tables'
-Parameters: Orig System = 'ALL'
-Submit

2. Retest with a new Expense Report.