MerchantSessionId Property
Your customer session identification token.
Syntax
directpayment.getMerchantSessionId([callback]) directpayment.setMerchantSessionId( merchantSessionId, [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 getMerchantSessionId([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 setMerchantSessionId([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
PayPal records this optional session identification token as an additional means to detect possible fraud.
This property is optional.
Character length and limitations: 64 single-byte numeric characters.
Data Type
String