A similar error within the Orchestrator Cluster configuration can be seen:
STANDBY Server License: Server license check: Failed Authentication provider: Authentication provider not properly configured. java.lang.RuntimeException: com.vmware.vcac.platform.rest.client.support.RetriableOperation$RetriableException: Retriable operation failed after the maximum number of attempts - [3]
Environment
VMware vRealize Orchestrator 8.x
Cause
This issue is seen if the Platform Services Controller is configured with custom domain other than default vsphere.local.
Resolution
To resolve the issue, in vRealize Orchestrator Configure Authentication Provider, change the default tenant to the custom domain name defined within the Platform Service Controller.