Case C‑77/21

Digi Távközlési és Szolgáltató Kft.

v

Nemzeti Adatvédelmi és Információszabadság Hatóság

(Request for a preliminary ruling from the Fővárosi Törvényszék)

Judgment of the Court (First Chamber) of 20 October 2022

(Reference for a preliminary ruling – Protection of natural persons with regard to the processing of personal data – Regulation (EU) 2016/679 – Article 5(1)(b) and (e) – Principle of ‘purpose limitation’ – Principle of ‘storage limitation’ – Creation, from an existing database, of a database to carry out tests and correct errors – Further processing of the data – Compatibility of the further processing of those data with the purposes of the initial collection – Retention period in the light of those purposes)

1. Protection of natural persons with regard to the processing of personal data – Regulation 2016/679 – Principles relating to processing – Principle of purpose limitation – Scope

   (European Parliament and Council Regulation 2016/679, recitals 10 and 50 and Arts 4, point 2, 5(1)(b), 6(1)(a) and (4))

   (see paragraphs 25-38, 45, operative part 1)

2. Protection of natural persons with regard to the processing of personal data – Regulation 2016/679 – Principles relating to processing – Principle of storage limitation – Scope

   (European Parliament and Council Regulation 2016/679, Arts 5(1)(c) and (e) and 6)

   (see paragraphs 52-59, 62, operative part 2)

See the text of the decision.