Optional device identifier, that provides a consistent multi-transaction identifier for a device or equivalent (e.g. service identifier) providing the data. Any errors or issues resulting from processing the data will include this identifier in the system logs, providing traceability. Identifier should be unique.

Optional external transaction identifier for the caller to uniquely identify and track the transaction and corresponding results. These identifiers will appear in the service logs for traceability analysis. The format of the transaction identifier is up to the caller and can be anything: e.g. [uuid], [id1.subid0], [numerical], etc. This data is never interpreted by the service.

A set of directives to influence processing.