EU GDPR | Art. 16

Right Of Rectification

Article 16
The data subject shall have the right to obtain from the data 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.
Article 16 will perhaps be best implemented by allowing the data subject access to a portal so that they can make any amendments themselves; such as account information, profile settings etc.