The field 'checkoutMode' is invalid for this API.

Hi.

I am trying to create a new checkout session id at the end of my checkout process as described in:
[https://amazonpaycheckoutintegrationguide.s3.amazonaws.com/amazon-pay-apb-checkout/add-the-amazon-pay-button.html](https://amazonpaycheckoutintegrationguide.s3.amazonaws.com/amazon-pay-apb-checkout/add-the-amazon-pay-button.html)

It's not working. I get the following reason code: {"reasonCode":"UnrecognizedField","message":"The field 'checkoutMode' is invalid for this API."}.

Please help.

Thanks Chris

No repository file or test is named. Start by reviewing the linked Amazon Pay checkout integration guide and the SDK entry point used to create the checkout session, then reproduce the request and its UnrecognizedField response. Done means the supported API request is identified and the issue's compatibility or required change is documented.

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