Disallow Purchase Order when WBS's budget is execeed.

Hello everyone,

Please guide me config for disallowing / blocking creating PO for WBS (type P) when WBS's budget is execeed.

I configed budget in CJ40 and CJ30, release completely in CJ32 but when I trying to creating PO with price greater than budget, system has still allow to creating.

How to disallow?

Thanks.