Logical Acknowledgement

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Discussion

A Logical Acknowledgement represents a Logical Data Structure Instance that reports receipt, acceptance, rejection, completion, failure, or other outcome for a command, request, message, event, or processing step.

Logical Acknowledgements support coordination and review by making outcomes explicit. They help Logical Nodes avoid hidden assumptions about whether another Node received information, acted on a command, completed processing, or encountered an error.

A Logical Acknowledgement supports traceability by identifying the acknowledged item, acknowledging the Logical Node, status, timestamp, reason, and provenance or evidence reference.

Definition

Logical Data Structure Instance reporting receipt, acceptance, rejection, completion, failure, or outcome.

Source

Specialization of Data Structure Instance, Communication Endpoint, and Traceability from Part 1, Sections 7.8, 7.6, and 7.10; generalised from command acknowledgement and control-plane material in the original FX Demo Reference Architecture.

Note

A Logical Acknowledgement does not require synchronous communication. Implementation profiles realize acknowledgements through selected communication mechanisms.

Example

A retry-command acknowledgement reports that a Logical Node received a retry command, accepted it, and started recovery processing.

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