Hi, The first column of my uploaded file is Country. And I need to validate its value from a given list like ('AA','AB','BC','DE','RG') . So added validation in Page Processing --> validations of Data/Table Mapping something as follows.. Type: Exists Validation expression1: c001 in ('AA','AB','BC','DE','RG') but I am ending up with error like ORA-01403:no data found.... I also tried to create Transformation Rule in Data Definition, but all valid country records are also getting failed because of that rule. Not sure how to crack this issue but I am highly in need of solution to proceed the development. Please suggest me the best solution to crack same at earliest.