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Starting in Db2 12, new capabilities and enhancements are continuously delivered in a single maintenance stream as the code becomes ready. You can activate the new capabilities in a data sharing group or Db2 subsystem after a function level is delivered. A function level corresponds to a single PTF that enables the activation of a specific set of enhancements that shipped in previous prerequisite or co-requisite PTFs that deliver the deactivated functional code. You can find a list of available Db2 12 function levels in the official product documentation. See What's new in Db2 12 function levels.#Db2forz/OS#Db2z12#Documentation