Changing the characteristics of a master data set

XRC cannot dynamically accept changes to the master data set. To change the characteristics of the master data set when it has been established, follow this procedure:

1. Remove all coupled sessions from the master session (XCOUPLE DELETE command for active sessions or XCOUPLE PURGE command for inactive sessions).
2. Reallocate the master data set.
3. Add sessions back to the master session (XCOUPLE ADD command).