1.7 Troubleshooting Citrix Xen VM Provisioning Operations

The following sections provide solution to the problems you might encounter while performing provisioning operations on VMs managed by the Citrix Xen hypervisor:

The Move, Create Template, and Clone Operations on a Citrix Xen VM Fail Occasionally

Source: Orchestration Server.
Explanation: The following error message is occasionally displayed when you perform a Move, Create Template or Clone operation on a Citrix Xen VM using the Orchestration Console: 
The server failed to handle your request, due to an internal
error.  The given message may give details useful for debugging the problem.
[<hostname>] message: Xmlrpcclient.Http_header_truncated("")
Action: Reboot the VM host machine to reset the condition.