To document clause 4.2 "Understanding the needs and expectations of interested parties," it is not mandatory to create documents, but organizations can choose to do so. They may document this through a List of Interested Parties and a Procedure for Determining the Context of the Organization and Interested Parties. The certification auditor will look for evidence that the organization has determined the interested parties and their needs and expectations, which can be shown through interviews or documents like meeting minutes or a registry of interested parties.