Change Control Stamping
Change Control stamping is always in effect, regardless of whether locking and history are also enabled. For every definition in the database, PeopleTools maintains a last updated stamp, which denotes the date and time of the last update and the user ID of the person who saved the definition. When a PeopleSoft application delivers a new database, all of the definitions are stamped with a PeopleSoft proprietary ID: PPLSOFT.
Stamping and Upgrades
Change Control stamping provides critical information during an upgrade comparison. Because the system tracks the user ID of whoever last changed each definition, you can easily identify your adaptations. (Any definition that is stamped with a user ID that is not the PeopleSoft proprietary ID is considered an adaptation.) Whether you made an adaptation before or after the last update is irrelevant; the adaptation is always identified as such.
During a comparison, definitions that you last modified are given a status of Custom Changed (if you have changed them since the compare date) or Custom Unchanged (if you have not changed them since the compare date). PeopleSoft-modified definitions are given a status of either Changed or Unchanged.