Subnetwork Trace "A networking error occurred"

[EdwardBlair]

So, I'm trying to use the Subnetwork Trace tool (though the same thing happens with a Connected trace) and I consistently get the error "A networking error has occurred" (below).  

Following instructions from the links below, I increased the "javaHeapSize" parameter on the published feature service to, first, 128 and second, 256. 

The first site says that a heap size of 256 should be able to handle 800,000 edges and 800,000 junctions.   My entire electric network is smaller than this.

Any other suggestions would be greatly appreciated.

Thx,

Ed

https://pro.arcgis.com/en/pro-app/latest/tool-reference/tool-errors-and-warnings/001001-010000/tool-...

https://pro.arcgis.com/en/pro-app/latest/help/analysis/geoprocessing/share-analysis/geoprocessing-se...

[EdwardBlair]

Doh!   I had made a number of changes and neglected to re-enable network topology.    Re-enabling allowed me to trace.

In my (meager) defense, sometimes just by writing out a description of the problem helps lead to a solution.

Sorry!

Ed