Warning (Yellow Flag) validation

Question

Is it possible (or is it functionality that is planned/coming) to expand the required field to allow for a "Warning" type message if a field is left blank?

We are designing a form for a field trip that allows no response to certain questions, however they would like it if a warning was displayed to the user that they had not completed the field but allowed the user to acknowledge it and still submit the survey.

DanielMcIlroy · Answer

That formulas page is a fantastic resource, thanks for passing it on. I definitely came up against the null value brick wall!

Thank you so much for your help, I am trying to implement Survey123 for a large field campaign about to be undertaken so no doubt I will pop up with more questions!

JamesTedrick · Answer

Hi Dan- great.  Make sure you pay attention to how null values are expressed - Formulas—Survey123 for ArcGIS | ArcGIS  provides guidance.

DanielMcIlroy · Answer

Thanks James, this works great and I think will solve the problem. I will modify the constraint to look for a null value rather than a number range as the user wants to allow field users to not capture a value, but ensure that it wasn't missed by accident.