Your fixes can help you to correct the problem and maintain the system.
Periodically, problems are discovered in your software or firmware. IBM® issues a fix (also known as a PTF, or program temporary fix) to correct the problem. Fixes play an important part in your system's maintenance strategy. They give you a chance to reduce system downtime, add functionality, or provide optimal availability. It is important that you develop a fix management strategy to help you keep track of fixes that are available for the software you have, and to ensure that you can keep these programs running smoothly.
For detailed information about fixes and how to develop a fix management strategy, see Maintain and manage i5/OS™ and related software.