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Bug

In ArcGIS Pro, the Field Calculator returns an error message “'Error 999999” when a join is present in a specific feature class.

Last Published: October 26, 2020 ArcGIS Pro
Bug ID Number BUG-000128100
SubmittedJanuary 23, 2020
Last ModifiedJune 2, 2025
Applies toArcGIS Pro
Version found2.4.3
Operating SystemWindows OS
Operating System Version10.0
StatusNon-Reproducible

Additional Information

This issue is fixed in ArcGIS Pro 2.7.

Workaround

Export the join to a permanent feature class, and use the Calculate Field tool.

Steps to Reproduce

Bug ID: BUG-000128100

Software:

  • ArcGIS Pro

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