- understandable by all stakeholders including the users
- non prescriptive i.e., should define what, and not how
- correct as judged by user
- complete. i.e., there should be nothing missing from each individual requirement nor the compete set requirements
- consistent. i.e., They should not contradict each toher
- unambiguous. i.e., There should be only one one possible interpretation
- also
- precise, concise, cohesive, feasible, relevant, up to date, testable, traceable