Hi! We can configure a cluster single node with single user as service principal using this command:

databricks clusters create --json '
{
    "cluster_name": "my-cluster",
    "spark_version": "13.3.x-scala2.12",
    "node_type_id": "Standard_DS3_v2",
    "driver_node_type_id": "Standard_DS3_v2",
    "single_user_name": "<CLIENTID>",
    "data_security_mode": "SINGLE_USER",
    "runtime_engine": "STANDARD",
    "num_workers": 0,
    "spark_conf": {
     "spark.databricks.cluster.profile":"singleNode",
     "spark.master":"local[*, 4]"
    },
    "custom_tags": {
        "ResourceClass":"SingleNode"
    }
}
'

 But when we want to use this cluster in a notebook we get this error:

Single-user check failed: user '<reserved>@<reserved>.com' attempted to run a command on single-user cluster <CLUSTERID>, but the single user of this cluster is '<CLIENTID>'

We want to get a cluster with a service principal because we know that multiple people may use the cluster with the correct configuration. What we don't know is that it may be missing configuration. In Settings -> Identity and Access -> Service Principal -> Permissions we are managers and users.

If anyone knows we would appreciate it