# The Uncertificated Securities Regulations 2001, Paragraph 20


A relevant system must comprise procedures which provide that it responds only to properly authenticated dematerialised instructions which are attributable to a system-user or an Operator.

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Source: https://www.legislation.gov.uk/ukdsi/2001/0110387449/schedule/1/paragraph/20 (the official version)
Page: https://openlegislation.uk/draft-uncertificated-securities-regulations-2001/schedule-1/paragraph-20
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.