Basic format
add_filter(‘frm_validate_entry’, ‘validate_my_form’, 20, 2); function validate_my_form($errors, $values){ if($values[‘form_id’] == 45){//Change 45 to the ID of your form and add additional conditions here $errors[‘my_error’] = ‘You are not allowed to submit this form.‘;//Change this to your error } return $errors; }Continue reading