Regardless of the data import format (system event format or graph format), process keys, hierarchy keys and shared fragment keys are calculated for the fragment instances to be imported. It is assumed that the configuration of the relevant rules is valid. If at least one process key was calculated, the imported fragment is saved in the EPK_IMPORT_TBL database table. Complete process instances are saved directly, i.e., without calculating a process key.
Complete process instances are considered done. They can no longer be extended by merging them with imported fragments. A complete process instance is identified by the AT_EPK_KEY process instance attribute.