How does these orders are completed when their risk category is 4 means blocked.in credit management

Hiii Everyone,

I had a query that creidt block is set for the particular customer.

Actually I JUST wanna know is there any chance to put credit block for debit memo request n debit memo.

As i know credit limit can be set to sales order level, delivery level n PGI level.

Thanks in advance.

Praveen