Published on 25 September 2025
Reporting U1.1 – Availability of the new XSD schema
CSSF
As indicated in the publication of the annex to Circular CSSF 15/627 of 7 February 2025, the new U1.1 reporting format will apply as from the December 2025 reporting period.
The XML schema associated with this format is now available on our website.
This schema is backward compatible with the current version.
Please note that the fields added, although still optional in the XSD, will be subject to checks depending on the reporting period.
https://www.cssf.lu/en/Document/schemas-xml-u1-1-applicable-as-of-the-12-2025-reference-period/