API ExportTo method (preview) - "API is not accessible for application" 403 response

[Anonymous]

We're trying to export a report to PDF format using the new ExportTo API method but are getting a 403 error "API is not accessible for application". Other methods like 'Get Reports In Group' work fine. The POST we're using is in format:

https://api.powerbi.com/v1.0/myorg/reports/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx/ExportTo

We've purchased a premium node, and the workspace that the report is in has been migrated to a premium capacity. We're also using Service Principal to authenticate.

Are there any special application scopes that need to be set or any special steps to be take as this operation is still 'in preview'? Does the ExportTo feature support ServicePrincipal?

Kind Regards,

David

[Anonymous · Accepted solution]

Sorted - was using the MyWorkspace version by mistake. Needed to use the "Export To File In Group" version.

[talderman]

I have no idea what you mean by "was using the MyWorkspace version by mistake. Needed to use the "Export To File In Group" version".  Can you please elablorate so myself and others that are having the issue can understand, please?

EDIT:

I think you meant to use:

https://docs.microsoft.com/en-us/rest/api/power-bi/reports/exporttofileingroup

Rather than using: 

https://docs.microsoft.com/en-us/rest/api/power-bi/reports/exporttofile

I was able to get past the 403 error by adding identity like below. 

{
   "format":"PDF",
   "powerBIReportConfiguration":{
      "pages":[
         {
            "pageName":"ReportPageName"
         }
      ]
   },
   "identities":[
      {
         "username":"test@example.com",
         "datasets":[
            "00000000-0000-0000-0000-000000000000"
         ],
         "roles":[
            "yourrole"
         ]
      }
   ]
}