Before you IPL the target system for the first time, you should determine whether your target system software is at the appropriate service level, and apply fixes if it is not. This section explains the additional service that you might need to apply.

See Service for background information on the service that is shipped with ServerPac, CBPDO, and SystemPac orders. See Maintenance after installation for guidance on applying maintenance to your z/OS® system after you have finished installing it.