Every merchant has their own installation ID. The ID is a 6 digit number that identifies who a transaction belongs to. (It tells the payment gateway "This transaction belongs to my company and should be deposited into my account".)
Log into your RBS WorldPay control panel using the link below. You should have your login and password on file. If not contact technical support at 800-661-7079 and ask them to reset the login and password for your account. The login and password will be delivered by email.
