Bug
In ArcGIS Pro 3.5.4, a Model Builder model that performs a route analysis iterating through dates with Iterate Field Values fails at the Solve tool, returning the "030134: Insufficient input. Need at least two stops." and "030024: Solve returned a failure." error messages.
| Bug ID Number | BUG-000180488 |
|---|---|
| Submitted | October 28, 2025 |
| Last Modified | December 12, 2025 |
| Applies to | ArcGIS Pro |
| Version found | 3.5.3 |
| Operating System | N/A |
| Operating System Version | N/A |
| Status | In Product Plan |
Additional Information
The issue only occurs when using inline variable substitution for the route layer's name. The cause of the issue is under investigation, but removing the inline variable substitution resolves the issue.Workaround
- Remove _%n% from the route name in Make Route Analysis Layer. The model runs correctly with no problems.
- Create two separate models. One model contains just the network analysis workflow and sets the route layer name and the time of day as model parameters. The second model contains the iterator and calls the first model.
- Use a Python script instead of a model. Learn more about how to do network analysis in Python: https://pro.arcgis.com/en/pro-app/latest/arcpy/network-analyst/performing-network-analysis.htm
Steps to Reproduce
Bug ID: BUG-000180488
Software:
- ArcGIS Pro
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