Final answer:
A system default account's type is predefined by accounting software and typically cannot be changed. It depends on the system's internal settings, which are designed for key financial functions.
Step-by-step explanation:
When you view a system default account in the edit count window, the account type is generally set and displayed by the system, and typically cannot be changed.
In most accounting software, system default accounts are pre-defined for crucial functions such as Accounts Receivable, Accounts Payable, and Retained Earnings. It's important to consult the documentation or help resources of the specific accounting software you're using for more precise information, as the actual account type name might vary slightly.