Internal Order status as AVC

Internal Order status AVC

Please check and advice to us, regarding Internal order status activated as AVC but still postings are allowed with PR/PO. I mean AVC status is didnu2019t working.

Example: while creation Internal order we assigned the budget as Rs.100000 in 1st year and utilize the total budget, But 2nd year also we raised PR/PO with same Internal Order with another amount Rs.20000 (without supplement budget in KO24) and balance is showing as Rs.120000 under Assigned column in KO23 , Why system will allow the postings with same internal order still status activated as AVC.

So please advise on urgent basis.

Regards

PV