In 7.2 or later, the limits on the length of object versions increased from 32 to 96 bytes. The increase might cause DCM problems for a DCM cluster that contains 7.2 or later databases and 7.1 or 7.0 databases. For example, a 7.2 database that contains object versions of 33 bytes or higher is incompatible with a 7.1 or 7.0 database with object versions set to a maximum of 32 bytes. Therefore, in a 7.2 or later database that participates in a DCM cluster with 7.0 or 7.1 databases, set the maximum object version length to 32.
How to set this option: Model object attribute