Node group membership rules

Nodes can be members of node groups if they meet certain requirements. Node group membership must adhere to the following rules:

A node in a node group must be a managed node.
A managed node must be a member of at least one node group. If the node is on the z/OS platform, the node group must be a sysplex node group.
Nodes on an OS/400 platform and nodes on the z/OS platform must be members of different node groups.
Nodes on the z/OS platform that are in different sysplexes must be members of different groups.