Identify and agree the sources of knowledge required to identify what to test. Use multiple sources; compare them and cross-check.

Consequence if ignored or violated

There is no way of knowing what to test. Inconsistencies and gaps in knowledge cannot be identified.


  • What sources will be used to describe the system and identify what is to be tested?
  • What is the derivation/heritage/provenance and reliability of these sources?
  • What are the levels of authority or precedence of these sources?
    How can test outcomes be related to the goals and concerns of stakeholders?
  • Who will authorise the use of these sources of knowledge?
  • Who will arbitrate/resolve conflicts between these sources of knowledge?
  • Who or what will provide the knowledge covering gaps in these sources?

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