API:
curl -v -H "Content-Type:application/xml" -k -u admin -X DELETE https://localhost/api/2.0/vdn/controller/controller-9?forceRemoval=True
Error:
Failed to remove controller controller-9 - imported controller is not allowed to be removed using this API.
VMware NSX for vSphere 6.4.x
If you believe you have encountered this issue, please open a support case with Broadcom Support and refer to this KB article.
For more information, see Creating and managing Broadcom support cases.