Hello,
I deployed Water Distribution Data Management for ArcGIS Enterprise for testing to ArcGIS Pro 2.8. and has started testing on sample data.
I am getting errors for Tracing - in Water isolation trace tool.
At first the tool failed to load (invalid tool error), but this was fixed by re-validating the mode in Model Builder, but regardless this the tool has returned error - see attached screen.

when the default attributes have been entered:

Is there any problem with PRO 2.8? Or is there any simple fix?
Thank you,
Vladimir