Extension Property

Any data necessary to support additional features.

Syntax

 mpi.getExtension([callback])
 mpi.setExtension( extension, [callback])

Default Value

""

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 getExtension([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 setExtension([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 contains any data necessary to support the requirements that are not otherwise defined in the Core Functions. This field must be properly formatted XML data, as defined in Visa 3-D Secure protocol specifications. An example of a properly formatted extension is included below.

"<Extension id="0" critical="true">Data (generally XML or ascii text)</Extension>"

Data Type

String