Setting Up a Merchant Account with a Payment Gateway
Apply for an account with one of the credit card gateways that integrate with NetSuite. Sign up for the processing features, such as payer authentication, that you plan to use in NetSuite. For MerchantE and CyberSource, you can apply for a merchant account and a credit card gateway at the same time.
After you establish both a merchant account and a credit card gateway, you are ready to set up the credit card gateways in NetSuite. See Setting Up Payment Processing Profiles in NetSuite