SequenceNumber Property
Sequence number of the transaction.
Syntax
emvkeymgr.getSequenceNumber([callback]) emvkeymgr.setSequenceNumber( sequenceNumber, [callback])
Default Value
0
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 the getSequenceNumber([callback]) method is defined as:
function(err, data){ }
'err' is the error that occurred. If there was no error, then 'err' is 'null'.
'data' is the value returned by the method.
The callback for the setSequenceNumber([callback]) 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
This field is user definable and can be used at the users discretion. The sequence number may be any numeric value 0 to 2400. This is an optional field and you may choose to send a unique number or simply send every transaction with zeros.
If set this value should be incremented for each transaction. When the sequence number reaches 2400, the SequenceNumber should then start over at 1 again.
This property is only applicable when Platform is set to Paymentech.
Data Type
Integer