Explanation/Reference:
The options for budgetary control settings are as follows: Absolute, Advisory, end None Absolute: If Absolute is entered, the transaction is rejected unless funds are available.
Advisory: If Advisory is entered, the transaction is approved even when no funds or insufficient funds are available.
None: If None is entered, all transactions are approved and there is no funds check.
References: https://docs.oracle.com/cd/E18727_01/doc.121/e13567/T237204T237227.htm