How to identify PR and PO is created with sufficent/insf funds if Budget control is set as Advisory?

Summary:

We have a requirement from our customer to create PR/PO approval rules for the Budgeted/Unbudgeted category.

Budgeted will be considered when the fund will get passed for the selected charge account code combination.

Unbudgeted will be considered when the fund will not get passed and the system gives a warning for the insufficient fund for the selected charge account code combination.

Budget control is set as Advisory.

Now at the PR level, we get funds passed for the Budgeted category if the funds are available and we can submit for approval also, But for the Unbudgeted category we get a warning for fund status due to insufficient funds still we can submit it for approval because the budget control is set as advisory.