You have clicked the Control Accounts browse button to open the Control Accounts - Accounts Payable window.

In the Account Code column, for one of the account types, either you have chosen the Choose From List button, or you have pressed Tab.

The List of G/L Accounts window has appeared.

In the List of G/L Accounts window, you have chosen New.

The Chart of Accounts Window has opened.

In the Chart of Accounts window, you have attempted to define a new G/L account in any drawer but not the Liabilities drawer.

You have chosen Add.