Error 8602

Invalid StandardProductID value. For details, see http://sellercentral.amazon.com/gp/help/24741

This error occurs when the StandardProductID value you provide does not meet the requirements for the ProductIDType you specified. Valid ProductIDType values include:

• UPC
• EAN

If you entered "UPC" as your ProductIDType, you must provide a valid 12-digit UPC as your StandardProductID value. If you entered "EAN" as your ProductIDType, you must provide a valid 13-digit UPC as your StandardProductID value.

Common reasons why your value may be invalid include the following:

• You did not provide the required number of digits because you ommitted the check digit. The check digit is the last digit in the string and is calculated based on the other digits in the string. You can verify or calculate your check digit by using one of the many UPC or EAN validators available on the World Wide Web.
• You did not provide the required number of digits because your StandardProductID begins with a zero and Excel removed that zero after it was entered in your Inventory File Template. If this is the case, reformat the StandardProductID column as text (Format > Cells...) before entering your StandardProductID value.
• You specified the wrong ProductIDType. If this is the case, enter the correct ProductIDType.

A good online tool for calculating the check digit for UPC and EAN numbers is maintained by EAN International. (http://www.ean-int.org/cdcalcul.html).