Can I re-use a form's reference code?
We recommend you do not re-use a form's reference code.
You cannot use identical reference codes for any type of form in the application. Even if you delete a form from your study, and then attempt to re-use the former reference code, you cannot do that.
Re-using a form's reference code will result in data errors for your reports and extracts that are generated in Testing mode, in particular.
Parent topic: Form and validation rule FAQs