I am trying to upload a pbix file that is over 2 gb using Power Shell and the Rest API. 

Reading the Post Import In Group documentation I see I have to upload to a temporary location and then pass a "fileUrl" in the body of the import request.

I used this Power Shell script provide by Microsoft. The upload of the file to temporary storage works fine but I get  "code": "InvalidFileSizeError" when trying to import the file from the temporary storage. 

I did see this one post on the forum about passing the size of the file in the header of the import call but not sure how to do that as I see no reference to this in the documentation.  Before reaching out to support I wanted to see if anyone else has a solution to this?

Any suggestions are greatly appreciated!

Successful Upload:

Error: