You lack inventory visibility—you are not aware of what is currently on the shelves, etc. Your current method of viewing inventory levels is inefficient, and it is difficult to determine what to order. You order often, but a high percentage of the time, your orders are inaccurate. This has a negative, costly impact.
You have inaccurate sales history/data. Your current method of receiving sales history/data is inefficient. You use this data in various ways, but it is often inaccurate. However, it is also difficult to determine whether it is inaccurate, and if it is, there are negative consequences. It is difficult to find valid data.