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Published: October 30 2006, 5:27:00 PMUpdated: November 28 2020, 2:57:16 PM

What does this error message mean?

Summary

This error message indicates that the value you have specified in the Item.ExternalProductID.Value field of AddItem is not valide for the type specified in Item.ExternalProductID.Type field.  For example, the ExternalProductID node below will return this error because 'X' is not a valid 'ISBN' number.

<ExternalProductID>
   <
ReturnSearchResultOnDuplicates>true</ReturnSearchResultOnDuplicates
>
   <
Type>ISBN</Type
>
   <
Value>X</Value
>
</
ExternalProductID>

To correct the problem, evaluate your ExternalProductID node, and ensure that the value complies with the  documented guidelines.

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