The MDM Hub generates or updates match tokens when batch jobs or SIF APIs are run. The match tokens are stored in the match key table and must be up-to-date for the match process. The MDM Hub maintains the match tokens independent of the match process.
When batch jobs or SIF APIs are run, base object records might be marked dirty. The MDM Hub generates or updates match tokens for base object records that are marked dirty.
Base object records are marked dirty if all of the following conditions are met:
An update affects match columns in a base object.
The best version of the truth (BVT) of a match column after the update is different from the old value.