Not clearly defining & standardizing master data elements stored in MDM slots is another frequent mistake. The organization may become inconsistent if various departments develop their own interpretations r rummyof what makes for accurate and comprehensive master data in the absence of a common understanding. In order to reduce this risk, a thorough data dictionary that lists the definitions, formats, and acceptable values for every master data element must be created. As a point of reference for all parties involved in master data management, this resource aids in maintaining uniformity across different systems.