Abstract: The present invention relates to the tracking of objects. The present invention relates to a method, a system and a computer program product for tracking objects.

Abstract: The present disclosure concerns the synchronization of hierarchical data between a sender and a recipient using hash codes. Hierarchical hash codes are used for synchronization of IT systems. The hierarchy of forwarded objects is condensed in the hierarchical hash codes which are exchanged between the IT systems. The complete hierarchy of the underlying and associated child objects is condensed in each hash code of a parent object: identifiers of the child objects and the relationships of the child objects below the parent object with one another and with the parent object. This applies to each aggregation level, so that the hash code of the at least one top element represents the complete hierarchy.