A coupling facility can be reconfigured to perform maintenance or to upgrade its level of control code. Before reconfiguring a coupling facility, you should have a plan in place for its orderly shutdown, during which time structures that are in the coupling facility can be either relocated to another coupling facility or deallocated (with a possible data loss). Applications using the coupling facility for its structure(s) should have documented procedures for how to relocate or deallocate them.
Refer to Parallel Sysplex® Configuration Assistant at http://www.ibm.com/s390/pso/psotool for help with the configuration of a coupling facility.