The error is not that the name of the cluster is incorrect, it means something in the cluster was not permitted. Follow the guide. Common issues are users don’t select Standard B2s VMs with a static node count of 2.
I have just got this working with this adaption from the guide for the deployment of AKS on Azure:
Select Production Standard from the Cluster Preset Configuration
Make sure it is in East US region and the already created ODL-Azure-nnnnnn Resource Group is selected.
Use Standard B2s for the AgentPool and UserPool
2 Nodes for AgentPool only - Delete the user pool
Leave Networking as Default
Don't select any integrations.
Ensure container monitoring is off - I turned off everything in Monitoring.
Select nothing in Advanced
Then when the cluster is created add in the User Pool - 2 nodes of B2s
I’ve just tried again and you need to set the pool to manual for AgentPool, 2 node and delete the UserPool. You then create the UserPool when the cluster has been created. See my updated post above.