Hey Liz
No problem what so ever 
now as we see here all UWL Connectors operate successfully which is good news this is what by referring to "how your workflow is configured" in association to the UWL setup and the backend calls.
- However everything appears to be fine here which is perfect.
Now lets go back to what you mentioned (SSO is configured however): you went to the tab user mapping for system access on my user, it says this:
- "There are no systems available for user mapping for the selected principle"
The most likely reason for the system not being shown on the "User Mapping for System Access" tab is that the group being edited in "Identity Management" doesn't have "enduser" permissions for the system. Since we are speaking about portal groups is possible that these are PCD permissions that can be configured either in the system Landscape editor or the Permissions editor of the Portal.
Please see page 8 in the below document and make sure that the aliases are set:
This should in theory remove this error exception highlight from the trace and then we can see where we are at.
Thanks for your patience and understanding thus far and talk soon.
Kind Regards & All The Best
Troy