Error GA4 import from BigQuery to PowerBI tables columns unnested values record types

Hi Ckg_PBI In this case as a workaround I think you can go directly from GA4 to PBI without using a DW. You can do that using for example an external connector. In our agency we use windsor.ai to pull GA4 data directly and once data comes to PBI we don't an issue like the one you have with BQ, because fields get pulled without those issues. In case you wonder, to make the connection first search for the GA4 connector in the data sources list:

After that, just grant access to your GA4 account using your credentials, then on preview and destination page you will see a preview of your G4 fields:

There just select the fields you need. Finally, just select PBI as your data destination and finally just copy and paste the url on PBI --> Get Data --> Web --> Paste the url.