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Duplicate Value Validator makes sure that no duplicate value is entered into the form.
Figure 1: Duplicate Value Validator Properties
|Form||Target form to validate against.|
Field ID in the target form selected above to validate against.
Use back the same ID of the current element to make sure that the value entered is unique.
|Mandatory||When checked, field value must be filled.|
|Regular Expression Format Check||Regular Expression to validate the value.|
|Wrong Format Error Message||Wrong Format Error Message|
Caveat: Duplicate Value Validator will not work with File Upload and Image Upload fields.