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Other Information (Details) - EUR (€)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Other Information (Details) [Line Items]      
Revenues € 63,089
Non current assets 10,740,069 4,988,602  
Germany [Member]      
Other Information (Details) [Line Items]      
Non current assets 10,600,000 4,900,000  
United State [Member]      
Other Information (Details) [Line Items]      
Non current assets 100,000 100,000  
Executive [Members]      
Other Information (Details) [Line Items]      
Executive management, non-executive members 800,000 900,000  
Non-executive [Member]      
Other Information (Details) [Line Items]      
Executive management, non-executive members € 100,000 € 100,000