====== 20.12 Implementation Constraints Summary ======

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[[fxdemo:04-part:20-phase-0-implementation-rules-and-constraints:start | Return to Phase 0 Implementation Rules and Constraints ]]

The Phase 0 Implementation Profile applies the following constraints.

  - Implementation artefacts do not redefine logical elements
  - [[dido:99_annexes:annex-b-terms-and-definitions:d:dds|DDS]] Topics do not redefine FX logical [[dido:99_annexes:annex-b-terms-and-definitions:c:communication_endpoint|Communication Endpoints]]
  - [[dido:99_annexes:annex-b-terms-and-definitions:i:idl|IDL]] structures do not redefine FX logical information structures
  - Generated types do not redefine FX logical information structures
  - Runtime processes do not redefine FX logical [[dido:99_annexes:annex-b-terms-and-definitions:n:node|Nodes]]
  - [[dido:99_annexes:annex-b-terms-and-definitions:r:repository|Repository]] layout does not redefine architecture
  - Scripts do not redefine interaction patterns
  - The Developer Handbook does not replace the implementation profile
  - Phase 0 does not define later phase implementation profiles
  - [[dido:99_annexes:annex-b-terms-and-definitions:d:deployment|Deployment]] and [[dido:99_annexes:annex-b-terms-and-definitions:e:evidence|Evidence]] concerns remain outside Part 4

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