Error 5008

Unsupported operation.

For more details, see http://sellercentral.amazon.com/gp/help/23111

If you received this error after submitting an inventory file, then you supplied a value other than "Update" or "Delete" in the update-delete column. Please resubmit with one of the two valid values.

If you received this error after posting a data feed, then you supplied an OperationType value other than "Update" or "Delete" in your XML envelope. Please repost your document with one of the two valid values.

If you received this error after submitting an XML listings feed, then you supplied an OperationType value other than “Update”, “PartialUpdate”, or “Delete” for a message. Please make sure all your OperationTypes are using one of these values according to the type of operation and re-submit your feed.