In addition to these changes in the 2000 revisions, several documents in the ISO9000 family of documents were retired, while others were revised.
The 1994 revisions were considered minor revisions with little change in the structure of the initial 1987 version of the three standards IOS 9001, IOS 9002, and ISO 9003, which were models for quality assurance. However, in the structure of the standards was considerably modified. This led to cancellation of the ISO9001, ISO9002, and ISO 9003 quality assurance system standards and their replacement by the single 9001:2000 quality management system standards. The ISO 9001:200 standard, the requirement of which are described in five clauses (Table 3.2), was substantially restructured when compared with the ISO9001:1994 standard in which the requirement were described in20 elements