ISO 9001 requires that after release of design documentation or source, all changes shall go through a formal process where changes are documented, reviewed and approved before implementation.
ISO 9001 inahitaji kwamba baada ya kutolewa kwa nyaraka kubuni au chanzo, mabadiliko yote watakwenda kupitia mchakato rasmi ambapo mabadiliko ni kumbukumbu, upya na kupitishwa kabla ya utekelezaji.