One of the rights ensured to European Union citizens under GDPR is their right to access personal data. In addition to having access to their personal data file, EU citizens also have a right to see any supplementary information attached to this data.
source
https://www.compliancejunction.com/gdpr-corrections-rectifications/amp/?__twitter_impression=true
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Accroding to art 17 of gdpr, eu residents might have the power to correct their personal data. Corporates should provide users with certain system to guarantee this kind of request from users.