+1I 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!
Christian
+15Hi there -
So if you use custom validation, you're going to need a JavaScript function.
I think another way to do it (off the top of my head) is to use a List Lookup control to lookup "Title" and display "Created". If it's populated at all (ie if Created = greater than 1/1/1900) then that means it's not unique, as it's found a match. Otherwise, it's good. I'd validate off that.
But ... JavaScript would likely be the better way if you're good with it. I ... am not. 
Cheers,
Rhia
checking for uniqueness in forms is not reliable.
your better option is to configure Title list field itself to 'Enforce unique values'
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