The new Settlement Amount for this transaction.
When performing an Authorization Reversal transaction, this field must contain a one to 12-character numeric transaction amount to be settled. The host subtracts this amount from the TotalAuthorizedAmount to derive the actual authorization amount to be reversed.
This must be presented with an implied decimal point. For example, US $10.00 must be represented as 1000, and $0.10 is likewise simply 10.