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Bug

When adding a transformation to the Append tool using WGS 1984 3D (EPSG 4979), no transformation path is available, and the transformation does not show anything.

ArcGIS Pro
Bug ID Number BUG-000174569
SubmittedFebruary 26, 2025
Last ModifiedMarch 11, 2025
Applies toArcGIS Pro
Version found3.3.1
Operating SystemWindows OS
Operating System Version10.0 64 Bit
StatusKnown Limit

Additional Information

GEOGCRS 3D coordinate systems in ArcGIS are listed and recognized by the software but are not fully supported. Unfortunately, at this time, ArcGIS does not currently provide transformations for converting between 2D and 3D GEOGCRS. As a result, no transformation can be selected, and a transformation warning is issued. GEOGCRS 3D should only be used with 3D datasets. An alternative for a 3D dataset is to utilize a 2D GEOGCRS paired with an ellipsoidal-based VERTCRS. For example, replacing 'WGS 1984 3D (4979 – GEOGCRS 3D)' with 'WGS 1984 (4326 – GEOGCRS)' and 'WGS 1984 (115700 – ellipsoidal VERTCRS)' provides a suitable alternative. This pairing ensures compatibility and accurate data representation within the ArcGIS system. Use the Define Projection tool to assign the appropriate pair to the dataset.

Steps to Reproduce

Bug ID: BUG-000174569

Software:

  • ArcGIS Pro

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