In order to maintain the adaptability of the SAPHMIS to the health system, in which it is used, a fourth component has to allow modifications in the setup of the SAPHMIS. These modifications concern all the changes which have been mentioned in the previous sections.

A meta database has to store the changes in the setup in a way, that the validity of old settings can always be traced. The input, processing and output component always have to consult this meta database before accessing the actual values in order to grant longitudinal validity.