The Luxembourg Commission de Surveillance du Secteur Financier announced changes to U1.1 reporting effective from 31 December 2025, allowing the transmission of U1.1 reports to be delegated and requiring the designation of submitters to be managed through the delegation module within the dedicated eDesk procedure. To support implementation, entities can already begin setting up delegation in the relevant eDesk procedure, supported by a user guide on the CSSF website explaining how to complete the delegation process.