Specific sales order not showing in VKM1

I have this sales order that is not showing in VKM1 even the credit status in not approved just wondering because there is other sales order with the sames credit account and credit status which show in VKM1. So there are two sales order with credit status not approved with the same credit account and same credit control area but only 1 of the 2 sales orders shows in VKM1. What are the cause of this scenario?

I check the 2 sales order in VKM4 the only difference is field OlIt (Status of credit check against oldest open items) the sales order that shows in VKM1 got status approved while the sales order that doesnt shows in VKM1 got status not approved. Is this a possible cause? Please help where I can find this status in the sales order header