1. Member States shall provide for the right of the data subject to obtain from the controller without undue delay the rectification of inaccurate personal data relating to him or her. Taking into account the purposes of the processing, Member States shall provide for the data subject to have the right to have incomplete personal data completed, including by means of providing a supplementary statement.

2. Member States shall require the controller to erase personal data without undue delay and provide for the right of the data subject to obtain from the controller the erasure of personal data concerning him or her without undue delay where processing infringes the provisions adopted pursuant to Article 4, 8 or 10, or where personal data must be erased in order to comply with a legal obligation to which the controller is subject.

3. Instead of erasure, the controller shall restrict processing where:

(a) the accuracy of the personal data is contested by the data subject and their accuracy or inaccuracy cannot be ascertained; or