Code of practice for Service Management (ISO 20000) As a code of practice, this part of the ISO/IEC standard takes the form of guidance and recommendations. It should not be quoted as if it were a specification and particular care should be taken to ensure that claims of compliance are not misleading. It should be used in conjunction with ISO/IEC 20000-1, the associated specification Please note that this publication is a shrink-wrapped document and not a bound book.