Empty Document – SignatureAPI Docs

What Happened

The server downloaded an empty file from the url parameter of the document resource.

The response includes a detail property with more information about this error.

Verify that the file at the provided URL is not empty by downloading it and opening it locally.
If you are using the Uploads resource, ensure the file was uploaded as binary and not as an empty request body.
If the URL points to a generated file, ensure the generation process completed before the envelope was created.