Original amount authorized before any reversals.
This field contains the transaction amount from the original authorization request message. If any additional authorizations have been made, or the SettlementAmount is different than the originally authorized amount (due to items out of stock or adding a Gratuity) this property should still reflect the original unchanged amount from the initial authorization request.
This amount is to be presented with an implied decimal point. For example, US $10.00 must be represented as 1000, and $0.10 is likewise simply 10. The allowable number of significant digits as well as the positioning of any implied decimal point is dictated by the designated CurrencyCode configuration setting. In the United States (default), the number of allowable significant digits is seven. Thus the maximum TransactionAmount is "9999999", yielding a US dollar amount of $99,999.99. This field may not contain a negative number.