This has nothing to do with being standard. I was just saying that your provided table and related X/Y columns are not EPSG:4326 and therefore not compatible with the World Geodetic System (WGS84) coordinate system. You can either change the related projection when registering the provider to the correct one or see whether you can retrieve other value representations for X/Y. If you have used SAS maps data - you should use the LAT/LONG columns when joining as these are EPSG:4326. You can easily detect the type here as the range is from -180 to 180 (longitude) or -90 to 90 (latitude).
Hope this helps. Falko
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