Error 18031

The net adjustment amount is not a positive amount and has therefore been rejected.

This error occurs for one of two reasons:

You submit an adjustment amount that exceeds the balance on the order item.
Your adjustment amount is zero.

You can use the Manage Orders feature in Seller Central to determine the outstanding balance for an order item.

To resolve this error, submit an adjustment amount greater than zero that does not exceed the outstanding balance for the order item.

Note: Unlike product data, you should not submit adjustment data for an order item multiple times unless you wish to make multiple adjustments. This error often occurs after resubmitting an entire adjustment file or feed that contained some errors without first removing the data that was successfully processed.

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