The risks can relate to, among other things:

• Planning realism - The test plan depends on the plans of the various other parties. How realistic are these plans?
• Entry quality - The two most important forms of input for the test process are the test basis and the test object. If this input is of insufficient quality, this will be very disruptive to the test process.
• Resources - Testing requires people and means, in a certain quantity and of a certain quality. In practice, it often appears at the execution stage that the resources agreed in the plan cannot be (entirely) delivered in time.
• Stability - To what extent will the test basis change during the test process? The more changes, the greater the consequences for the test process in terms of reworking.
• Infrastructure - Is it stable enough for the test; does the environment have to be shared with other parties, is the environment sufficiently representative; is enough support available? In many test projects, the infrastructure forms the most unmanageable risk.