A framework for identifying and resolving inconsistencies between multiple data sources is provided. Identification data that indicates rules for identifying inconsistencies between multiple data sources is stored. Rule data that indicates rules for resolving inconsistencies between the multiple data sources is also stored. The rules contained in the identification data are evaluated by an inconsistency identifier. Based on the evaluation, the inconsistency identifier generates output data that identifies the inconsistencies between the multiple data sources. The output data may be stored in a persistent store. Reports and user interfaces may be generated that present the generated output data. An inconsistency resolver processes the output data and the rule data to resolve one or more of the inconsistencies that are identified in the output data in a manner indicated by the rules represented in the rule data.