An  Internal Order  is a self-contained mini project cost object, i.e. it's a collection of costs, but not a full project with WBS and network relationships. The  Internal Order  should settle to Fixed Asset, Project, Cost and/or Profit Centers at the accounting period (month) end. Monitor internal jobs settled to cost centers (overhead orders) Monitor internal jobs settled to fixed assets (investment orders) Offsetting postings of accrued costs calculated in CO (accrual orders) Display the cost controlling parts of Sales and Distribution customer not affect the core business of the company (orders with revenues). We can use overhead orders for detailed controlling for a particular object or activity. All costs related to this object or activity are assigned to the relevant order. We can use orders as internal cost objects. For example if the company participate in 2 trade fair to target new clients . Without Orders ,  we post costs for the two trade fairs d