Step 1. Prepare to install APAR or PTF

Before you start to install an APAR or PTF, do the following:

1. Create a backup copy of the current z/OS® Debugger libraries. Save this copy of z/OS Debugger until you have completed installing the APAR or PTF, and you are confident that the service runs correctly.
2. Research each service tape through the IBM® Support Center for any errors or additional information. Note all errors on the tape that were reported by APARs or PTFs and apply the relevant fixes. You should also review the current Preventive Service Planning (PSP) information.