Team Goals Center - error when using Assign Goal button "An assignment ID or organization ID.."

Summary:

We are finding the following for all our line managers. We are on 25A and using Redwood for Goal Management:

As a line manager, navigate to My Team > Team Goals Center. Select Assign Goal button. Complete goal details. In ‘Assign To’ section, select ‘Direct and Dotted Line Reports’ and add all direct reports one at a time. Check ‘Include all reports of selected managers'. Select Add.
Error appears at top of page: "An assignment ID or organization ID is required to create a performance goal. (HRG-3120108) The person ID doesn't match the assignment ID. Enter a new person ID or assignment ID and try again. (HRG-3120095)."