(1) The registration authority may use those data which have been stored in accordance with section 3 (1) no. 17a only in communicating with the authority holding the Central Register of Foreigners as soon as it was informed by the foreigners authority as required by section 90a (1) sentence 3 of the Residence Act (Aufenthaltsgesetz).
(2) The registration authorities may process the data designated in section 3 (2) only for the purposes given therein. They are required to implement technical and organisational measures as referred to in Articles 24, 25 and 32 of Regulation (EU) 2016/679 to ensure that these data are processed only in accordance with sentence 1.
(3) The data designated in section 3 (2) may be processed together with the data designated in section 3 (1) only as far as this is necessary to carry out the relevant task. Section 34 (3) and (4) remains unaffected, provided that
1. the data referred to in section 3 (2) no. 1 may be transferred only to the bodies responsible for preparing and conducting the elections and voting referred to therein and
2. the data referred to in section 3 (2) nos. 2 and 3 may be transferred only to the Federal Central Tax Office. The date of the dissolution of a marriage or life partnership referred to in section 3 (2) no. 2 (c) may also be transferred to official statistics.
The data referred to in sentence 2 nos. 1 and 2 may also be transferred to the registration authorities as set out in section 33.