ISO 10004:2018 This document gives guidelines for the process of complaints handling related to products and services within an organization, including planning, design, development, operation, maintenance and improvement.
The complaints-handling process described is suitable for use as one of the processes of an overall quality management system.

NOTE Throughout this document, the terms “product” and “service” refer to the outputs of an organization that are intended for, or required by, a customer.

This document is intended for use by any organization regardless of its type or size, or the products and services it provides.
It is also intended for use by organizations in all sectors. Annex B provides guidance specifically for small businesses.