According to GDPR Article 16, the right to rectification means that the data subject shall have the right to obtain from the controller without undue delay the rectification of inaccurate personal data concerning him or her. Taking into account the purposes of the processing, the data subject shall have the right to have incomplete personal data completed, including by means of providing a supplementary statement.

The data controller should take reasonable steps to ensure that the data is accurate and to rectify the data if necessary. The controller should take into account the arguments and evidence provided by the data subject.