![]() To get MWSAuthTokens for sellers already using your solutions you can call the GetAuthToken operation as more fully described here. If you are a developer for whom multiple sellers have authorized your developer account number, including the MWSAuthToken in Amazon MWS requests is currently optional, but starting Mayou will be required to include the MWSAuthToken in all Amazon MWS requests. The MWSAuthToken is an authorization token that we have started issuing to represent the authorization of a specific developer by a specific Amazon seller. As part of our ongoing efforts, Amazon MWS authorizations now include an additional parameter – the “MWSAuthToken”. We are always looking for ways to ensure that our Amazon Marketplace Web Service is safe and secure. I can't stress enough how important it is to use the scratchpad.Amazon MWS will require the Auth Token to be used by all client apps on 15 March, 2015 Be sure to use a timestamp as indicated - I had to write something to create a 20-char representation of the current zulu time by calling CEEUTC and CEEDATM (there is an example on this forum somewhere) Convert your string-to-sign to ASCII before calculating the MD5 - again, the scratchpad will show you thisģ. Build your parameter strings (keywords & variables) in ascending order (numbers, upper, then lower) - it all has to be in the same order as you see in the scratchpad - even the line feedsĢ. When posting XML data stored in a streamfile (inventory levels), you have to also calculate the MD5 for the XML content.ġ. I also used Qc3CalculateHash (IBM API) for the "Content MD5 Value" used in the SubmitFeed operation. I used Qc3CalculateHMAC (IBM API) as Ted indicated above. I used Scott's HTTPAPI, BASE64, and WEBFORMS to build my strings and do the conversion to ASCII I only implemented the Feeds API (SubmitFeed operation) and Orders API (ListOrders, ListOrderItems, and each of those. The key to all of them is calculating the MD5 Hash correctly and using the Amazon Scratchpad to test/verify. There are so many different APIs, but they all work basically the same. Yes, I did get this working for our purposes (APIs for Getting orders, updating inventory levels, updating orders as shipped). Jay - Sorry, I was on vacation last week. The documentation for MWS is very detailed, but contains some discrepancies. I added the MD5 to the end of the query string in the &Signature variable. Rc = http_url_post(.I did NOT have to add the Content-MD5 header. Consult the service documentation for details."Ĭode: String = 'POST' + LF + '' + LF +/Orders/'. ![]() Check your AWS Secret Access Key and signing method. When I post (without the Content-MD5 in the header), I receive: "The request signature we calculated does not match the signature you provided. But I'm not sure how to calcuate the value for "Content-MD5" in the header. I believe the latter is the Signature value from my original post. It also provides the "Post Data" along with two other values: "SHA 256 HMAC" and "Base64 HMAC". The MWS scratchpad gives me a "string to sign" which I can match. In looking at http_debug.txt, i can see that I do not have "Content-MD5" and "Content-type" are not present. My problem is understanding the "Signature" and the "Content-MD5" header. ![]() Scott - you showed me before how to add headers using HTTPAPI - so I think I can do that. Did you add code for that, Ted? Or did Amazon accept the request without it?I'm still struggling to understand these web services, the MD5 hash etc. HTTPAPI does not automatically set the content-md5 header.
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