When visitors fill out a form (ex: Giving form) on the public website while not signed in, they must fill in the CAPTCHA code at the bottom of the form.
If they forget to fill in a required field on the form, they may receive an error message similar to this one: ERROR: Some fields are not completed properly. Please check to make sure all required fields have been completed and submit again.
In these instances, the form loads new CAPTCHA code. They must enter the new CAPTCHA code at the bottom of the form before submitting the form.