Hi , I think 

• The automatic identity management feature provisions Azure Entra ID users and groups directly into Databricks. However, Terraform's databricks_group and databricks_group_member resources are designed for managing groups and memberships within Databricks, not for managing Azure Entra ID groups directly.
• The error Group has no member occurs because the databricks_group resource is trying to manage a group that is already being managed by Azure Entra ID through automatic provisioning.