We have been manually been keying Amazon orders into our system and would like to automate it. However, I can't seem to figure out how to go about it. Their documentation is barely there.
There is:
So, um, which do I use? Using REST instead of SOAP is very much preferred. Can anyone point me out some better documentation/examples?
AIM and SOAP are historical APIs. The best choice is MWS, which supports all features of AIM and SOAP (i.e. all listing activity, inventory reports, order reports, order acknowledgement and cancellations, refunds, settlement reports). MWS is also well documented at mws.amazon.com, and example client libraries are provided for Java, C# and PHP. For feed and report formats, you should refer to Seller Central Help pages for all formats (unless you are a Marketplace seller, in which case the help pages are accessible from your seller account page).
You may also want to peruse www.amazonservices.com
Finally, here's a link to the SOA-GuideToXML.pdf document, which describes the details of the XML feeds and reports, as well as the overall workflow:
http://g-ecx.images-amazon.com/images/G/01/rainier/help/tutorials/SOA-GuideToXML.pdf