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Operating expenses - Schedule of Other Operating Income (Expenses) (Details) - EUR (€) € in Thousands | 6 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024
Analysis of income and expense [abstract] |  |
Other non recurring expenses | € (12) | € (137)
Other non recurring income | 5 | 3
Total other operating income and expenses | € (7) | € (134)

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- References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_85&doctype=Standard -URIDate 2025-03-27 + Details
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