After having installed the new service, you should perform two operations:

1. Create a backup of the updated data sets, including the SMP/E data sets affected. This ensures that if something happens to the data sets during the next phase, you do not have to repeat all the processing done in previous steps.
2. Perform some testing before putting the service into production. This testing should include some of the following:
   • Run selected product IVP jobs.
   • Run test job streams, if your installation has them.
   • Attempt an IPL.

Only after verifying the service on a noncritical test system should you put that service into production. The test phase should not be considered complete until you have run the service in production mode for some period (as determined by the requirements for your installation). If no errors are found, you are ready to proceed to the next step: updating your distribution libraries.