Notes

• NOTE 1 A need can be declared or undeclared it can be an existing or a potential one.
• NOTE 2 The user is a person or an organization for which the product is designed and which exploits at least one of its functions at any time during its life cycle.
• NOTE 3 For the space community, the needs are often called mission statement.
• NOTE 4 Adapted from EN 1325-1.