I attempted to publish a point feature class from an enterprise geodatabase as a vector tile service using the referenced registered data option in ArcGIS Pro 3.5 to ArcGIS Enterprise 11.5, applying the ArcGIS Online tiling scheme. However, the publishing process initially failed.
Upon further investigation, I noticed that the data was in the WGS 1984 coordinate system. After using the Project tool to convert the data to WGS 1984 Web Mercator Auxiliary Sphere, I retried publishing using this updated feature class, and the process completed successfully.
Based on this, I would like to understand whether it is mandatory for the feature class to be in the Web Mercator projection for vector tile publishing, or if there are any alternative approaches that would allow publishing without requiring this reprojection.