a) Requirements should be specified as completely and thoroughly as is known at the time, even if
evolutionary revisions can be foreseen as inevitable. The fact that they are incomplete should be
noted.
b) A formal change process should be initiated to identify, control, track, and report projected changes.
Approved changes in requirements should be incorporated in the SRS in such a way as to
1) Provide an accurate and complete audit trail of changes;
2) Permit the review of current and superseded portions of the SRS.