outsourcing and expectation management

Business success relies on decision making process, and one of the most important decision making processes is choosing an outsourcing partner. Outsourcing is happening in almost all companies such as manufacturing companies, financial and fiduciary companies. During an outsourcing contract there are too many unknowns which we cannot control all of them, and, as we discussed in panels, one of the keys to have a right decision is expectation management. However, expectation management brings reality into the contact but we should not lower our expectation too much that affect the business process.
Then there should be a balance between expectation and reality in an outsourcing contract.