National Reporting B2.4 – New eDesk procedure

Starting 1 February 2026, the method for submitting national B2.4 reporting (B2.4 Participating interests and subordinated loans) will change.

Reports will now be collected exclusively through the two methods below, free of charge :

A dedicated eDesk procedure
An API solution based on the submission of a structured exchange file via the S3 protocol

A user guide will be available shortly.

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

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