Hi Witmond,
Using the DI Server is an option but like ERIC LAPOUGE mentioned in this thread, B1if is more of the way to go at the moment.
Regarding your request I've attached a sample XML of the DI API with multiple documents (for Items it follows the same structure but with different data).
The attachment is actually a zip with a txt extension (because zips are not allowed), so you need to change it back to .zip.
Good luck.
Best regards,
Pedro Magueija