.. _2026-05-26-table-preview-rules-fix_release:

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2026-05-26 - Table Preview Error Fix on Rules Screen for File Sources
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Release
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AgileData.io - Rules Preview Fixed: File-Sourced Tables Now Preview Correctly

When a rule was configured with a file as its data source, opening the table preview on the rules screen was throwing an error. The preview was attempting to look up the table using a pattern intended for database sources, which doesn't apply to file-based sources.

This has been corrected. The rules screen now handles file-sourced tables correctly when generating the preview, so you can review your data as expected regardless of whether the source is a database table or a file.

**What was happening:**

* Attempting to preview a file-sourced table on the rules screen caused an error
* The preview logic was using the wrong lookup pattern for file-based sources

**What this means for you:**

* Table previews on the rules screen work correctly for rules that use files as their data source
* No more errors when reviewing file-sourced data while configuring or inspecting rules

Last Refreshed
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*Doc Refreshed: 2026-05-26*