IBM periodically creates program temporary fixes (PTF) to correct existing problems or potential problems within a particular IBM® licensed program.
PTFs are designed to fully replace one or more objects in the licensed program. Primary and secondary languages can have language-sensitive online information PTFs.
If the primary language of your system is changed at any time for reasons other than a new release update, the cumulative PTF package of the new primary language should be at the same level as the previous primary national language. PTFs that were associated with the primary language and any secondary language must be applied again. In addition, primary language and secondary language PTFs for the online information need to be ordered by the customer.