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Nintex form: Validating a field entry against all list items

Question asked by voelkc on Feb 16, 2018
Latest reply on Feb 19, 2018 by emha

I am working with a task list named "Tasks" and would like to validate that entries made into the field "Title" are unique.

How can I validate in my Nintex form against those requirements?

Can I use the custom validation option in the form settings or do I use "calculated value"?

I am already validating to use only certain characters with "Regular Expression".


Any help to create the formula is helpful.


Thank you in advance!