Hi folks,
I recently started working with Trace Networks and topology in an effort to use Arc Hydro, and I am struggling to understand and correct a very prevalent error. Working in ArcGIS Pro 3.2.
My inputs for the network are a point feature class (storm drain nodes, i.e. inlets, outlets, manholes etc.) and a line feature class (storm drain pipes, i.e. directional lines connecting the nodes).
Initially I had several Stacked Point and Midspan connectivity errors - was able to get past these by switching from Simple to Complex edge connectivity policy and cleaning up duplicate points.
Now, however, virtually every line in my network has Error type 32:
"Error setting weight values. [This weight cannot be null.]"
I am having a hard time understanding the source of this error, and where/how to correct it. I think I understand that the weights are attributes from the input data used to trace through the network, but I don't completely understand which attributes are selected or how they are applied. I did not see an option in the Create Trace Network GP tool to choose which fields are used for weights.
I have found some related documentation of the error:
https://pro.arcgis.com/en/pro-app/latest/help/data/trace-network/error-features.htm#
https://pro.arcgis.com/en/pro-app/latest/help/data/utility-network/about-error-features.htm
but have not been able to identify how to actually solve the problem.
Mea culpa: I have not worked through every Esri tutorial/example of using and correcting trace network errors (though I have read through and done portions of a few of them) - I am trying to generate a product at work on a tight timeline, so I'm hoping to get some directions straight towards the root of the problem.
Any context, explanations, or suggestions about how to solve this problem and get a trace network suitable for use with Arc Hydro would be so helpful!
Thanks in advance - please request clarification as needed!
