Due to an anomaly in the overtime data sent to the tax authorities, some of the pre-filled information on the 2024 tax return based on 2023 income is inaccurate.

You may be affected by this situation.
In this respect, you will find below a document outlining the procedures for correcting pre-filled tax returns, as defined by the DGFiP in the manner you deem appropriate.
The central administration departmental correspondents have also been informed.
As a reminder, the deadline for “paper” declarations is 05/21; for internet declarations, 06/06.

Find the document here.