How to prevent form submissions creating new contacts

[Jeff_Hager]

You may want to consider custom forms. This will allow you to build relations to check for existing contacts. Then you can set up a custom action to add a new contact row only if the relation is empty.

How do I create a custom form?

I’m just dropping this here so I have something to refer people to when they ask. This is a simple concept app (copyable), that demonstrates the following techniques: Building custom forms for adding and editing list items (as an alternative to the native forms provided by Glide) Preventing duplicate new entries using User Specific Columns and Relations Enforcing mandatory input items The use of visibility conditions and user specific booleans to control user flow There is nothing particula…

You could also try this with a native form that has an Add Row action in the On Submit action. I’ve heard that relations partially work in a native form, as far as checking if they are empty or not, but I’ve never tried it myself. I’ve been using custom forms more often lately.