Warning (Yellow Flag) validation

[DanielMcIlroy]

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.

[JamesTedrick]

Hi Dan,

One way this can be accomplished is with a select_one/select_multiple that is used to override the constraint - the constraint function becomes 

<Existing constraint> or ${overridefield} = <override value>

As an example:

(survey sheet):

type	name	label	hint	constraint
integer	value1	Enter in the number of things	(Normally 10 or less)	. < 10 or ${ok1} = 'override'
select_one ok	ok1	Confirm that the number is correct

(choices sheet):

list_name	name	label
ok	override	Value is correct

[DanielMcIlroy]

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.

[JamesTedrick]

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

[DanielMcIlroy]

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!