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The channel scheme setting defines how IBSNOW connects to the Snowflake streaming endpoint. A channel represents a logical, named streaming connection to Snowflake. When you choose EDGE_ID as your channel scheme, IBSNOW will make a separate connections to the Snowflake streaming endpoint for each unique Sparkplug edge node.

Why are my SPARKPLUG_DEVICE_MESSAGES table and NODE_MACHINE_REGISTRY_VW view empty?

If you are not publishing MQTT Sparkplug messages formatted using Sparkplug templates, these will not be populated as the templates are used to create and maintain the NODE_MACHINE_REGISTRY_VW view. The payload will be present in the SPARKPLUG_RAW table.