Obtain your Access Key ID and Secret Access Key at https://portal.aws.amazon.com/gp/aws/securityCredentials. Input these values into appropriate fields at FoxyCart admin.
Create a separate Access Key ID / Secret Access Key pair at https://portal.aws.amazon.com/gp/aws/securityCredentials.
With the Amazon Payments developer sandbox, you can force an error by placing certain decimal values in the amount.
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Current Amazon FPS requires that a phone number be submitted with the order, but by default the phone field on the checkout is optional. We plan to dynamically update this requirement out of the box, but in the meantime, if you are using this gateway you'll need to add some javascript to your checkout to make the phone field required. See this page for details of how to do that.
If you are changing the shipping values on the checkout using flat rates, you'll need to hide the button from the cart using CSS. Amazon FPS has a restriction that once the customer has been authorized, the payment total can't be increased. By sending the customer to the checkout first, their final total can be correctly calculated.
An Amazon FPS transaction may not process instantly, so at the time we process the initial transaction, we don't know if it was approved or not. To handle this, transactions are initially marked as pending, and when we get a confirmation from Amazon on the result of the transaction, we update it accordingly. Each time the status changes, a datafeed will be sent to your endpoint if configured with the transaction details and the status node will be present.
The status node can contain one of three different values: pending, approved or rejected. Depending on the types of actions you're needing to perform at your datafeed endpoint, you need to make sure the appropriate status value is present.
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