There is a abnormal sales order in our SAP system. This sales order has been completed delivery and billing. I have checked all status for the all relevant documents(order,DN,GI, and Billing). all of those are completed. However, the sales order requirement still display in our MRP/stock list even if I multiple run MRP/MPS planning. So, SAP still generate plan order for the sales order. I guess this is a bug. So, anybody can help?