Instruct: Classify the following sentence into a predefined topic category:
Under what circumstances can a data subject exercise the right to data portability?
Assign it to one of the following topics:[Controller and processor, Cooperation and consistency, Rights of the data subject, Independent supervisory authorities, Transfers of personal data to third countries or international organisations, Remedies, liability and penalties, Provisions relating to specific processing situations, Principles, Final provisions, General provisions, Delegated acts and implementing acts]
Output: