I'm implementing an expense claim. And the users are required to attach a receipt except if they are only claiming mileage. How do I create a condition on the attachments to be required if they select yes on a "yes/no - Mileage Only" field.
I tried to put a rule on the attachments to make it disabled if the user selects mileage only=yes. But how do i make it required to complete if mileage only=No?!
I found earlier an article here that explains how to make fields required on a single line of text but it doesn't apply the same way on "attachments" as there is no named control for attachments. I also don't want to disable the save button, i need it to give an error message to the user to explain what is missing.