Export as DOCX is a non-blocking (asynchronous) operation

The document generation process may take some time. With a successful request, you receive a response with task ID, status created and document id. After process completes, usually in a few minutes, the task status moves to the done state. You can download documents up to 300 pages. For documents of 301+ pages, you will receive an error “400: The number of pages more then limit 300”