Cisco Catalyst 3650 series Command Reference Manual page 906

switch stack port
If you enter the switch stack-member-number stack port port-number disable privileged EXEC command
and the stack is in the partial-ring state, you cannot disable the port. This message appears:
Disabling stack port not allowed with current stack configuration.
Examples This example shows how to disable stack port 2 on member 4:
Device# switch 4 stack port 2 disable
Command Reference, Cisco IOS XE Everest 16.5.1a (Catalyst 3650 Switches)
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