In an example embodiment, a demand signal management system is configured to coordinate data harmonization among a plurality of entities. The demand signal management system may obtain unharmonized data through third party entities. Global records based on internal master records and taxonomy information may be distributed to the entities. In some embodiments certain entities may have authority to create new global records. In other embodiments, some entities may have authority to approve proposed new global records. In still other embodiments, some entities may not have authority to create new global records. Unharmonzied data sent to the entities for harmonization in accordance with the global records. The entities may accept or reject the harmonization request. If accepted, the entity may return an updated global record, a proposed new global record, and/or a new global record depending on the unharmonized data, the global records and the entities' authority.