The Danish Business Authority released OIOUBL 2.1 schematron version 1.16.0, enhancing e-invoice data quality with CO2 data checks and stricter currency code controls. Implementation is required by November 27, 2025.
Denmark Releases Updated OIOUBL Schematron
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Denmark
Author: Ivana Picajkić
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Content accuracy validation date:
14.11.2025
Content accuracy validation time:
08:08h
The Danish Business Authority has released version 1.16.0 of the OIOUBL 2.1 schematron as a final version. The update is minor and focuses on improving data quality in e-invoices.
The new version adds:
- Checks for CO2-related data in invoices. This information is optional, but if it is included, the schematron will validate that it is formatted correctly.
- Stricter control of currency codes to ensure all amounts use a valid currency specification.
The update does not change how invoices are structured but strengthens validation to help ensure consistent and correct data across systems.
The new schematrons can be downloaded here:
The new schematron must be implemented by November 27, 2025.
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