Each Organization ID (formerly known as a Cybersource Merchant ID) includes two account levels that you may sign in to manage things.

You use the merchant-level account primarily for normal, day-to-day business activities with your Organization ID such as processing transactions, viewing transaction history, and reporting. 

The account-level account (normally appended with the "_acct" designation) is considered the parent to the merchant-level account. Some merchants perform activities for multiple merchant-level accounts via Single Sign-On (SSO) from one account-level account. For example, a merchant could perform administrative tasks such as reporting across multiple child/account-level accounts. If you work with a single Organization ID, you may seldom need to access the account-level account.

 

Example

Organization ID: cybs001

• merchant-level account: cybs001
• account-level account: cybs001_acct

 

Additional Information 

Account Registration Guide