Hi, I haven't been able to find any documentation on this but is the ArcGIS plug-in for Power BI compatible with well-known-text (wkt)? I tried using wkt in the Location field but it hasn't been working for me.
I don't think ArcGIS for Power Bi will accept wkt as a format in the Location field. For reference, these are the accepted fields that the ArcGIS GeoEnrichment service will accept:
Prepare your data—ArcGIS for Power BI | Documentation
I hope that helps!