U1.1 Reporting – New format and new features

Since 1 January 2026, U1.1 reporting has evolved with the introduction of a new format, applicable to reference dates from December 2025 onwards.

This new format comes with additional features designed to improve the transmission and management of reports including delegation.

The required reports must be submitted using the following methods:

A user guide detailing the submission procedure is available in the eDesk procedure.

If you have any questions, please contact edesk@cssf.lu.

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