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“Input parameter signature is invalid” Error with Amazon Payments in 1.4.0.1
 
Red Mouse Computers
Sr. Member
 
Total Posts:  123
Joined:  2009-10-04
 

ugh! I had a customer tried to checkout with Amazon Payments as her payment method but when she was redirected to amazon, “Input parameter signature is invalid” came up. This problem was apparently fixed in an earlier version of magento so wondering why is reappeared. any fixes or known cause?

 
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