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    Nintex Knowledge Base

    Error "There was an issue validating the data entered on the form: please try again" After Updating Nintex Forms

    Summary
    After updating Nintex Forms for SharePoint 2013 to version 2.9.4.0/2.10.0.0, the following error might occur in any form rule that has both Lookup() function and IsNullOrEmpty() function together: Validation Error There was an issue validating the data entered on the form: please try again. If the problem persists, contact the form designer.

    Solution
    1. Create new form variable, in the formula add the whole rule to that variable.  For example: and(equals(lookup("List1","Title","Company1","Column1"),"Yes"),isNullOrEmpty(NewNameValue))
    2. Create new validation rule on the form, where you evaluate the form variable based if it is true or false.