• Does the requirement specify a true need, desire, or obligation?
• Have you identified the root cause that necessitates the requirement?

• Is the requirement stated as a complete sentence?
• Is the requirement stated entirely in one place and in a manner that does not force the reader to look at additional information to understand the requirement?

• Is the requirement unambiguous and not confusing?
• Does everyone agree on the meaning of the requirement?

• Is the requirement in conflict with other requirements?
• Is the terminology used consistent with other requirement and glossary terms?

• Can you determine whether the system satisfies the requirement?
• Is it possible to define a clear, unambiguous pass or fail criterion?
• Is it possible to determine whether the requirement has been met through inspection, analysis, demonstration, or test?

Is the requirement uniquely identified so that it can be referenced unambiguously?

• Can the requirement be satisfied within budget and on schedule?
• Is the requirement technically feasible with current technology?
• Is the requirement physically achievable?

• Are all requirements that impose constraints on the design, thereby limiting design options, justified?
• Is the requirement stated in such a way that there is more than one way that it can be satisfied?

• Does the requirement statement define exactly one requirement?
• Is the requirement statement free of conjunctions (and, or, but) that could indicate multiple requirements?