ISO/TS 8000-120:2009 specifies requirements for the representation and exchange of information about the provenance of master data that consists of characteristic data, and supplements the requirements of ISO 8000-110. Provenance is the history or pedigree of a property value. Any claim of conformance to ISO/TS 8000-120:2009 implies a claim of conformance to ISO 8000-110. ISO/TS 8000-120:2009 includes a Unified Modeling Language (UML) conceptual model for provenance data. Just as provenance is a key element of the value of a work of art, it is also a key element of the value of data. It allows the recipient of a master data message to trace master data that has been exchanged back to its source, and helps the recipient to assess the trustworthiness of the data, and make a choice when values for the same property are received from different sources.