Defined in the law · AI Act Art. 3(23)
Substantial modification
In plain English
A change to an AI system after it reaches the market or is put into service, not planned in the original conformity assessment, that affects its compliance or changes its intended purpose.
The definition in the law
‘substantial modification’ means a change to an AI system after its placing on the market or putting into service which is not foreseen or planned in the initial conformity assessment carried out by the provider and as a result of which the compliance of the AI system with the requirements set out in Chapter III, Section 2 is affected or results in a modification to the intended purpose for which the AI system has been assessed
Related
The official text is quoted word for word from the English version of the source named under it; only the version published in the Official Journal of the EU is legally binding. The plain-English line is Fino’s own summary, not legal advice.