Section 73
Limits to mutual assistance
The rendering of mutual assistance and the transmission of data without a request is not permissible if it would contradict core principles of the German legal system. In the case of requests pursuant to Part 8, 9, 10 and 13, the rendering of assistance is not permissible if executing the request would go against basic principles as set out in Article 6 of the Treaty on European Union.
3. Where execution of a particular measure of assistance detailed in a request presented under paragraph 1, is prohibited in the requested State on the basis of an existing fundamental legal principle of general application, the requested State shall promptly consult with the Court to try to resolve the matter. In the consultations, consideration should be given to whether the assistance can be rendered in another manner or subject to conditions. If after consultations the matter cannot be resolved, the Court shall modify the request as necessary.