Cisco Cloud Observability ingests metric, event, log, and trace data (MELT) and reports in relation to a Service Instance. If an instance is not uniquely identifiable, the instance reports as an Unknown ID Service Instance and can represent the reporting of multiple logical nodes. This can occur when neither a service instance ID nor container ID is available. Because reporting infrastructure and tags leads to a One:Many relationship and the possible incorrect attribution of load metrics to infrastructure, tags, and version slices, all tags, and infrastructure correlation report as Unknown ID Service Instances.
Cisco Cloud Observability backend is unable to identify a Service Instance when insufficient data is present in the resource attributes of an OpenTelemetry™ packet when a Service Instance ID is not explicitly specified in the resource attribute.