©Net Objectives, 2002
NetObjectives
39
Identify Extension Conditions
nFor
Each Step in the MSS:
nBrainstorm all Conceivable Failures and
Alternative Courses
nBe
Sure to Consider:
nAlternative Success Paths
nThe Actor behaving incorrectly
nValidation failing
nInternal Failures in System
nExpected
failure modes
nAbnormal
failure modes
nCritical Performance Failures