ReverseLastTransaction Method

Reverses the last attempted transaction.

Syntax

fdmsgiftcard.reverseLastTransaction([callback])

Callback

The 'callback' parameter specifies a function which will be called when the operation completes (or an error is encountered). If the 'callback' parameter is not specified, then the method will block and will not return until the operation completes (or an error is encountered).

The callback for this method is defined as:

function(err){ }

'err' is the error that occurred. If there was no error, then 'err' is 'null'.

'err' has 2 properties which hold detailed information:

err.code
err.message

Remarks

If a transaction times out or you are otherwise unsure if it completed successfully, immediately use this method to reverse it. If the transaction had gone through successfully, the ResponseCode will be "00" and the other Response properties will show the results of the reversal. If the transaction was never actually received by the FDMS Closed Loop Gift Card System you will get a ResponseCode of "33", indicating that no previous transaction was found to reverse.

The ResponseCode and ResponseText properties indicate whether this transaction was successful.