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newuser-62779b43-2b2e-4c94-b799-16ac4625efcc asked ·

Amazon MWS SignatureDoesNotMatch

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I am integrating Amazon MWS Product API into my application using the IRestClient method. But I am getting this error ( Sender SignatureDoesNotMatch The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details. ). I tried all the way, I am sending the Params also order by Asc only, but Still I am facing this issue. I am working c# asp.net project.

amazon developer portalamazon web services
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Oswald answered ·

Hey there! Thank you for reaching out on our forums. Sorry about the delay in response. I would recommend reaching out to the Marketplace Web Service support team who might be able to help you further here.

Marketplace Web Service: https://developer.amazonservices.com/

Contact MWS: https://sellercentral.amazon.com/gp/mws/contactus.html

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