Profile: gregM-8

add_filter( 'cred_form_validate', 'require_featured_image_validation', 10, 2 );
function require_featured_image_validation( $data, $form_data ) {
	$forms = array( 225 );
	if( in_array( $form_data['id'], $forms ) ){
		list($fields,$errors)=$data;
		if (empty($fields['_featured_image']['value'])) {
			$errors['_featured_image'] = __( 'Featured image is required', 'your-language-domain');
		}
		$data =array($fields,$errors);
	}
	return $data;
}