Development of refund liabilities during the period is presented below: | | | | | | | | | | | Year ended December 31 | | in € thousand | 2025 | 2024 | | | BALANCE AS AT JANUARY 1 | 26,141 | | 39,941 | | | | Additions | 4,649 | | 4,013 | | | Payments | — | | (979) | | | Other releases | (1,117) | | (18,922) | | | Revenue recognition | (9,985) | | — | | | Interest expense capitalized | 193 | | 360 | | | Exchange rate difference | (2,383) | | 1,728 | | | BALANCE AS AT CLOSING DATE | 17,498 | | 26,141 | | | Less non-current portion | (6,684) | | (6,491) | | | | CURRENT PORTION | 10,814 | | 19,650 | | |
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