Message
The following fields had their types converted for compatibility with ArcGIS data types: <fields>
Description
Some field types are not supported in ArcGIS. For example, when written to feature layers, Boolean fields are converted to string since Boolean is not a supported field type for feature layers.
Solution
By default, Data Pipelines converts fields to the nearest supported type. To explicitly update field types before they're written, you can use the Update fields tool.
To learn more about how field types are converted when writing to hosted feature layers or tables using Data Pipelines, see the Feature layer output tool topic.