Partial approval response codes

These codes indicate that a transaction was processed using partial approval. They represent a successful transaction, not a failure.

Code	Description
`1001`	Underpayment. Paid amount is less than the requested amount
`1002`	Overpayment. Paid amount is greater than the requested amount

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Do not confuse response codes 1001 and 1002 with the decline code 5010 (Partial approval). Code 5010 indicates that a partial approval was possible, but the conditions specified in the partialApproval object were not met.