This error occurs when we are unable to recognize the MerchantOrderItemID you provided. The
MerchantOrderItemID must exactly match a value you previously provided in an order
acknowledgment feed. Common reasons why this error may occur include:
You accidentally provided the AmazonOrderItemID instead of your own
You transposed or omitted characters in your MerchantOrderItemID.
Your MerchantOrderItemID was never created in the Amazon system because of an error in a
previous order acknowledgement feed.
To resolve this error:
Review you’re the MerchantOrderItemID field. If the AmazonOrderItemID is in that field,
provide a valid MerchantOrderItemID. If the field has a typo, correct this.
Update your acknowledgment feed with the corrected MerchantOrderItemID and resubmit your
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