A method for refining data discrepancies in data loads from multiple data stores includes receiving a data set containing data records from one or more data sources, comparing the received data set with a prior data set to identify delta records among corresponding records of the received and the prior data sets, recalculating a best record for data located in each of the corresponding delta records, and if a discrepancy exists in a data value for corresponding delta records, executing a refinement action rule. The refinement action rule includes at least one replace statement and search criteria. The method also includes capturing a user's interaction with a user interface presenting the data set, and storing the interaction in a data store as a refinement action rule. A system for implementing the method and a computer readable medium are also described.