A computer-implemented method includes, in a master data management system, receiving a persistent modification request affecting a master data attribute, determining that no preexisting master record exists in the master data management system for the master data attribute, and, responsive to determining that no preexisting master record exists for the master data attribute, adding a new master data attribute and associated new ownership information for the master data attribute to the master data management system, based on the persistent modification request. A corresponding computer program product and computer system are also disclosed.