https://community.esri.com/t5/trace-network-questions/issues-with-inconsistencies-in-shortest-path-trace/m-p/1028238#M70 <P><a href="https://community.esri.com/t5/user/viewprofilepage/user-id/452636">@JackDaniels519</a>&nbsp;Thank you for the details.&nbsp; I've taken a look at the data you have shared and can reproduce the issue.&nbsp; The issue appears to be related to the location of the starting point in a loop; however, I have not yet been able to determine the cause.&nbsp; I've created an issue to investigate and can provide more insight once we've had an opportunity to review further.</P> Thu, 18 Feb 2021 20:53:46 GMT JonDeRose 2021-02-18T20:53:46Z https://community.esri.com/t5/trace-network-questions/issues-with-inconsistencies-in-shortest-path-trace/m-p/1026892#M69 <P>Hello,</P><P>I am relatively new to ArcGIS and I'm currently working on creating a trace network showing rivers in the UK. When initially developing the trace network I received a number of errors due to junctions being placed in the middle of line features (Error Type 13:&nbsp;<SPAN>Midspan connectivity not allowed). This could not be solved by allowing complex edges, as system junctions were created in places where there was no connectivity.&nbsp;</SPAN><SPAN>I used the point errors generated by the Trace Network in the "Split Line at Point" Tool to generate a new line feature class, and then recreated the Trace Network using this. I thought this had solved the problem&nbsp;</SPAN><SPAN>as no errors were received when the network was validated. </SPAN></P><P><SPAN>However, I am now getting some strange inconsistencies when running a shortest path trace. For example, in the attached image I am trying to run a trace between points 1 and 4. I know the points are connected (checked using a connected trace), but I am receiving the error "WARNING 002535: No path was discovered". I have also run shortest path traces between all other combinations of these points (1-2, 1-3, 2-3, 2-4, 3-4) using exactly the same parameters, with no issues. Similar inconsistencies are occuring at a number of other points in the network, but I am not sure why.</SPAN></P><P><SPAN>A small sample of tha data/project used to create the image is attached.</SPAN></P><P>Apologies if this is just a result of my lack of experience - but I'd appreciate any suggestions.</P> Mon, 15 Feb 2021 16:22:40 GMT https://community.esri.com/t5/trace-network-questions/issues-with-inconsistencies-in-shortest-path-trace/m-p/1026892#M69 JackDaniels519 2021-02-15T16:22:40Z https://community.esri.com/t5/trace-network-questions/issues-with-inconsistencies-in-shortest-path-trace/m-p/1028238#M70 <P><a href="https://community.esri.com/t5/user/viewprofilepage/user-id/452636">@JackDaniels519</a>&nbsp;Thank you for the details.&nbsp; I've taken a look at the data you have shared and can reproduce the issue.&nbsp; The issue appears to be related to the location of the starting point in a loop; however, I have not yet been able to determine the cause.&nbsp; I've created an issue to investigate and can provide more insight once we've had an opportunity to review further.</P> Thu, 18 Feb 2021 20:53:46 GMT https://community.esri.com/t5/trace-network-questions/issues-with-inconsistencies-in-shortest-path-trace/m-p/1028238#M70 JonDeRose 2021-02-18T20:53:46Z