We have a DELL OMI (v.3.1) appliance up and running and now I am in a situation where one of the vCenters connected to it is decommissioned. Unfortunately it wasn't removed in the OMI appliance before it was decommissioned.
So now I can't remove it in the GUI due to the fact that it is unreachable.
"Could not contact the given vCenter server X. Check the vCenter status and IP/hostname."