# Recital (177)

In order to ensure legal certainty, ensure an appropriate adaptation period for operators and avoid disruption to the 
market, including by ensuring continuity of the use of AI systems, it is appropriate that this Regulation applies to the 
high-risk AI systems that have been placed on the market or put into service before the general date of application 
thereof, only if, from that date, those systems are subject to significant changes in their design or intended purpose. 
It is appropriate to clarify that, in this respect, the concept of significant change should be understood as equivalent 
in substance to the notion of substantial modification, which is used with regard only to high-risk AI systems 
pursuant to this Regulation. On an exceptional basis and in light of public accountability, operators of AI systems 
which are components of the large-scale IT systems established by the legal acts listed in an annex to this Regulation 
and operators of high-risk AI systems that are intended to be used by public authorities should, respectively, take the 
necessary steps to comply with the requirements of this Regulation by end of 2030 and by 2 August 2030.

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Source: Regulation (EU) 2024/1689 (Artificial Intelligence Act) as amended by Regulation (EU) 2026/1744, consolidated text of 27 July 2026 (Official Journal of the EU). This page is AI-generated legal information, not legal advice. Verify against the Official Journal.
Canonical: https://euaiactlaw.com/recital/177