In the preceding topic, the result of the last two scenarios is the creation of two separate global resource serialization complexes that will not correctly serialize resources across the two sets of systems. This problem will not occur if you correctly migrate the complex from a mixed-ring complex to a star complex.

• If your goal is to run in a global resource serialization star complex, make sure that the CTC definitions are removed from the GRSCNFxx member used to define the star complex, or
• If you desire to remain in a ring complex, do not add the global resource serialization record to the sysplex couple data set.