The right to rectification means that individuals have the right to have inaccurate data rectified. This right is stated in Article 16, that says:
“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.”
This right to rectification is linked to the obligation of the accuracy principle in Article 5(1) (d) GDPR which state that the controller needs to make sure that the data being processed is accurate.