Regarding Budgets

User are having Budgetary Control enabled in Oracle GL.

There are 100 expense accounts. 80 expense accounts are assigned to organization and budget are defined for these 80 organizations. Budgetary control method are enabled for these 80 accounts.

For rest 20 accounts, there is no budgets and no budgetary control method is enabled. Users are creating expense PO for these 20 accounts.

In Funds inquiry screen, when users query these 20 accounts, funds available is showing in negative amounts for these accounts.

Is it a standard functionality? If it is a standard functionality, is there any method to disable it so that 20 accounts for which budget is not defined, don't show in funds inquiry screen