====== 9.1 Core Concepts ======
[[fxdemo:06-part:10-operating-model:start | Return to Operating Model]]

The Cost Recovery, Compensation, and Settlement Plane uses a small set of core concepts to support economic accountability.
  * A [[dido:99_annexes:annex-b-terms-and-definitions:c:chargeable_work_unit]] identifies a measurable unit of governed work for cost attribution.
  * A [[dido:99_annexes:annex-b-terms-and-definitions:w:work_performed_event]] identifies completed governed work.
  * A [[dido:99_annexes:annex-b-terms-and-definitions:q:qualified_node]] a Node recognised as eligible to perform a defined governed function.
  * A [[dido:99_annexes:annex-b-terms-and-definitions:q:qualified_service_provider]] identifies an accountable participant recognised as eligible to provide one or more governed functions.
  * An [[dido:99_annexes:annex-b-terms-and-definitions:e:evidence_reference]] links a record to supporting evidence without exposing the full evidence payload.
  * A [[dido:99_annexes:annex-b-terms-and-definitions:c:compensation_claim]] records a request for economic recognition for governed work.
  * A [[dido:99_annexes:annex-b-terms-and-definitions:c:cost_rule]] determines economic treatment for governed work.
  * A [[dido:99_annexes:annex-b-terms-and-definitions:s:settlement_instruction]] identifies settlement treatment for governed work.
  * A [[dido:99_annexes:annex-b-terms-and-definitions:n:non-performance_indicator]] identifies a lack of evidence for required governed work.
  * [[dido:99_annexes:annex-b-terms-and-definitions:c:competitive_substitution]] supports the replacement of one qualified implementation by another qualified implementation for the same governed function.
  * [[dido:99_annexes:annex-b-terms-and-definitions:c:content_minimisation]] limits exposed information to the information needed for an assigned purpose.
  * [[dido:99_annexes:annex-b-terms-and-definitions:u:under-compliance]] identifies failure to satisfy an applicable obligation for governed work.