named.unmanaged.node.not.found=XNMI0015E: There is no node with name "{0}" in cell "{2}". No statistics will be reported by the node.
Explanation
The node custom property of a Generic Server Cluster endpoint specifies a node that is not defined in the specified cell.
User response
Either remove or correct the node name in the node custom property of the Generic Server Cluster endpoint or define a node with that name in the specified cell.