Credit Management Issue

Hi,

1). In FD32 i have maintained the Risk Category HIGH

2). 100% Limit used already.

3). Again created sales order. While creating sales order system given warning message saying Credit Limit Exceeded

4). Still system allowed me to save the sales order. Why it allowed me to save the order even Limit Exceeds

5). After saved the above sales order, i checked in FD32, the above created sales order didnot effected in credit limits.

how to avoid this issue in Credit Management?

Thanks