When checking out on a new SCA implementation it errors in when completing the order with the following error.

You entered 'null' into a field where a calendar date was expected.\nPlease go back and change this value to the correct date.

We have tried: • Attempted to make any date field not mandatory on the Sales Order form. • Looked through Website settings and configuration for any date requirements and can't find anything. What is active on the site: • Summit Theme • Core Content Extension • Custom Fields Extension • Gift Certificate Management Extension • Inventory Display Extension • Summit Theme Extension How would I find what field is causing this error?

Do you have scriptable cart running? If so, try to test without them.

I checked. It isn't running.