input: [Parameter] Transaction Method [Default] Authenticate [Description] 
output: The following transaction methods are available to process transactions with: Authenticate The Authenticate transaction method only verifies the card and card holder using the 3D-Secure mechanism provided by the card-schemes and card issuing banks. Authorisations and Settlements of transactions are performed manually on the My Sage Pay Admin interface. Deferred The Deferred transaction method verifies and authorises the transaction and is captured manually on the My Sage Pay Admin Interface. Payment The Payment transaction method verifies, authorises, and transfers the funds to your Merchant account via batch settlement.