The URL is used to upload files by posting multipart/form-data, upload files by sending base64 encoded data, and download files with octet stream or base64 format. When the URL is used to download files, data is returned as base64 (when specified). When the URL is used to upload files, it should be specified as multipart/form-data. The file content is posted as binary data when multipart/form-data is not specified. Existing files are overwritten.

The following error message are returned: