====== 9.7 FX Contract State Topic Mapping ======

[[fxdemo:04-part:09-mapping-from-fx-logical-communication-endpoints-to-dds-topics:start | Go To Mapping from FX Logical Communication Endpoints to DDS Topics ]]

The FX Contract State [[dido:99_annexes:annex-b-terms-and-definitions:l:logical_communication_endpoint|Endpoint]] maps to the [[dido:99_annexes:annex-b-terms-and-definitions:d:dds|DDS]] Topic that carries the Phase 0 implementation representation of FX Contract State information.

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**Table 9-4:** FX Contract State Endpoint to DDS Topic mapping.
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^ Mapping Concern ^ Phase 0 Implementation Treatment ^
| FX logical Communication Endpoint | FX Contract State Endpoint |
| DDS Topic | Data.FX.ContractState |
| Primary information structure | FX Contract State |
| IDL structure / generated type | Phase 0 representation of the FX Contract State |
| Producing Node Role | Contract State Management Role |
| Consuming Node Roles | Cash-Flow Computation Role; Policy Evaluation Role; Audit Recording Role; Provenance Recording Role |
| Primary Runtime Plane | FX Logical Data Plane |
| Supporting Runtime Plane | FX Logical Audit and Provenance Plane |
| QoS profile family | Data Plane QoS profile |
| Traceability expectation | DDS Topic traces to the FX Contract State Endpoint and the FX Contract State. |

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