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Requirement Types

FR, NFR, BR, TR, CR, OR — six primary requirement categories.

CodeTypeDescription
FRFunctionalWhat the system must do
NFRNon-FunctionalHow well the system must perform
BRBusinessBusiness rules, policies, constraints
TRTechnicalTechnology constraints, integrations
CRComplianceRegulatory, legal, security standards
OROperationalDeployment, maintenance, support
Tags: requirement types, FR, NFR, BR, TR, CR, OR