topic ArcGIS Pro/Model Builder problem in ArcGIS Pro Questions

ArcGIS Pro/Model Builder problem

GaryMorris — Thu, 29 Jan 2026 19:48:03 GMT

I am building a model that joins to feature classes and then calculates a field in one based off of a field in the other. I am getting them to successfully join but then the model fails while it is running the "Calculate Field" tool:

ERROR 002717: Invalid Arcade expression, Arcade error: Field not found Permits_Agg_2025_Test, Script line: 1

The fields are not populating for me to select them, so I manually entered the full field name using both feature classes but am still getting the error.

I am using ArcGIS Pro 3.6.1

Any help is greatly appreciated.

Re: ArcGIS Pro/Model Builder problem

DavidSolari — Thu, 29 Jan 2026 20:31:51 GMT

This might be an Arcade limitation, if you use the Python calculation mode does that work?

Re: ArcGIS Pro/Model Builder problem

Robert_LeClair — Thu, 29 Jan 2026 22:50:58 GMT

Typically the ERROR2717: Invalid Arcade expression means an invalid syntax error as referenced here - 002717: Invalid Arcade expression—ArcGIS Pro | Documentation - can you provide the Arcade expression you're using?

Re: ArcGIS Pro/Model Builder problem

GaryMorris — Fri, 30 Jan 2026 18:27:47 GMT

No, it tells me it is an invalid field as well.

Re: ArcGIS Pro/Model Builder problem

GaryMorris — Fri, 30 Jan 2026 18:29:17 GMT

It is just making one filed match another field so it is $feature.fieldname. Since it is a joined table I have also tried $feature.inputtable.jointable.fieldname