The development and change history of the System are documented in the Project History. It is used as a source of information and reference about the course of the project, and, by maintaining static plan and change data, also as a planning and controlling instrument.
The change/version history wants to make the content, the causes, the decisions and the change development between successive product versions traceable during the entire operation time of the project, and also for the entire System.
This chapter describes the information about traceability of changes (documentation of changes from one version to the next, and documentation stating which changes have been integrated into which version).
All products affected by changes are listed. In this connection, it is necessary to differentiate between those products that are directly affected by a change, and those products that only have to be changed as a consequence of the actual change.
Based on the analysis and evaluation of the Project History it is possible to get empirical experience and knowledge about the development process of the project that will be useful as lessons learned for future projects.