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A record of this violation should be accessible in the Schengen Information System (SIS II). This system is maintained by each member state and you can request your information from the respective member state:
Switzerland is on Page 87 of the pdf titled "Guide for exercising the right of access to the Schengen Information System (SIS II)" guide on the Federal Data Protection and Information Commission website.
It points you to exactly which authority you must direct your request.