Create a new export file instance

Export file instances are created based on a an export file through the export_file_id. <br> They are created asynchronously, so when you create an export file instance, you get back the id and the current state, which will be pending on the first request. <br> You can then poll the detail page of an export file instance until the state changes to created. When the state is created, you can fetch the content. <br> <b>Required scope(s):</b> financials:write