You can add, modify, and delete channel path definitions. If you define a device as static or installation-static, you cannot delete or modify the channel path definition to that device.
Using an IBM® zSeries 900 or later processor, you will be able to dynamically add, delete, or modify coupling facility receiver channels and coupling facility peer channels. For an S/390® 9672 Parallel Transaction Server, you cannot dynamically add, delete, or modify coupling facility receiver (CF receiver) channels. However, at POR, you could define more CF receiver channels than are currently connected to coupling facility sender channels. Later, to create more connections from an operating system to the coupling facility, you can activate an IODF that dynamically adds CF sender channels connected to the defined CF receiver channels.