Remove ip from server

[hyperdesignbot]

I want to remove the IP from the list of public IPs
Is it possible to remove the IP from the server before deleting it from the public IP list?
Because when I delete IP:

ci = CloudInterface(dc=1)
ci.login(username='*******', password='*******', load=True)
ci.remove_ip('2944713')

I receive the following message:
ArubaCloud.base.Errors.RequestFailed: Request: {"ApplicationId": "SetRemoveIpAddress", "RequestId": "SetRemoveIpAddress", "SessionId": "SetRemoveIpAddress", "Password": "******", "Username": "******", "IpAddressResourceId": "2944713"}, Response: {'ExceptionInfo': None, 'ResultCode': 8, 'ResultMessage': 'IP address with ResourceId=2944713 is associated with Server 468218\r\nExceptionCode=8\r\n\r\nExceptionCode=8\r\n', 'Success': False}
and the IP is not removed from the IP list