Amazon Simple Pay Error: input parameter names are not recognized
Posted by Jim McCormick, Last modified by Jim McCormick on 13 November 2009 01:26 PM
After clicking on the final continue button to go from shopping cart to Amazon you are presented with an error that includes this:

==================================================================================== Invalid Request Error Message: * The following input parameter names are not recognized: ====================================================================================

It will display something like this:

Invalid Request

Error Message * The following input parameter names are not recognized: question1, Coupon_Error, maxquestions, coupon_id37, question3, question2

=====================================================================================
Cause

The mvt:item name="payment" item is not the last mvt:item on the OPAY page.

======================================================================================

Solution

Move the mvt:item name="payment" item below the last mvt:item on the OPAY page.

1. Click on Pages and then Edit on the OPAY page.

2. Search for the 'mvt:item name="payment"' item, highlight the entire item including the '<' and the trailing '/>' and cut it (ctrl-x or right click and select cut)

3. Find the final 'mvt:item' and paste(ctrl-v or right click and select Paste) the 'mvt:item name="payment"' item below it.

4. Add a note if desired to the Notes area above the Version History and then click update. Just click Update if you do not wish to add a note to the version history.

5. Test the checkout process again.
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