During the deployment of a slave CCE appliance when it came to the last step I received an error message: We failed to run Publish-CCAppliance.
I waited around 5 minutes and ran the step again and it completed successfully and the appliance started handling calls, I was unable to see what the Management service was doing or why the automated process wasn’t able to handle it but I’d thought I would share and reassure people that running it again worked.