§ 30 LDSG RP
Processing for Other Purposes
(1)Processing of personal data for a purpose other than that for which they were collected shall be lawful where the other purpose is a purpose referred to in Section 26(1), the controller is authorised to process data for that purpose, and the processing for that purpose is necessary and proportionate.
(2)Paragraph 1 shall not apply to the processing of personal data which are subject to a professional secret or a special official secret and have been transmitted to the data processing body by the person obliged to maintain secrecy in the exercise of his or her professional or official duties.
(3)The processing of personal data for another purpose not referred to in Section 26(1) shall be lawful where it is provided for in a legal provision.
(4)Section 7(5) shall apply accordingly. zur Einzelansicht § 30