Retrieving Form Version XLS(X)

If a Form Version was created with an Excel file (.xls or .xlsx), you can get that file back by adding .xls or .xlsx as appropriate to the Form Version resource path. This endpoint supports ETag header, which can be used to avoid downloading the same content more than once. When an API consumer calls this endpoint, the endpoint returns a value in ETag header. If you pass that value in the If-None-Match header of a subsequent request, then if the file has not been changed since the previous request, you will receive 304 Not Modified response; otherwise you'll get the latest file.