Is each requirement consistent with the overall objective
for the system/product?
Have all requirements been specified at the proper level
of abstraction? That is, do some requirements provide a
level of technical detail that is inappropriate at this
stage?
Is the requirement really necessary or does it represent
an add-on feature that may not be essential to the
objective of the system?
Is each requirement bounded and unambiguous?
Does each requirement have attribution? That is, is a
source (generally, a specific individual) noted for each
requirement?
Do any requirements conflict with other requirements?