How to prevent to prevent problems about the incomplete, inadequate or inaccurate information. When assigned the task write down detailed tasks, Recording commands work or keep the document order , and repeat it again to make sure that taking the content completely. When mistakes, we can bring this information to argue with the person who ordered job to us. When the start working, we must ask the information and more details from the people who have knowledge of them. For example, the head of the ordered to produce 1000 shirt. When it received the order to check that ordered the products customers, old or new, if the old customers to view a list of previous orders. If the order is not the same. We need to ask the customer whether or not the order in 1000. If the customer says the 1500 order. We have already recorded customer orders to head to make the leader asked customers will not crash.