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002129: The subnetwork name already exists.

Description

This applies when creating new subnetwork controllers or importing subnetwork controllers.

The subnetwork name must be unique for the entire utility network. The only exception is when the subnetwork controllers exist within the same tier.

See Create a subnetwork and review the requirements section and the Subnetworks table to see the properties for existing subnetwork controller.

Solution

Ensure that the subnetwork name is not used in the utility network for another tier.