Hi there,

I have a form that's been created for us, in this form there's 3 'people' based fields.

If more than 1 user is added to the 'Current Users' field, then we get the below error when it's submitted. Multiple users can be added to any other field without issues. 
 

All the fields have been setup in the exact same way, I was wondering if anyone else has seen a similar issue?

Thanks for your help.