The new Implementing Regulation adopted by the European Commission requires ECHA to make sure that all companies registering the same substance are part of the same registration. To implement this requirement, the dossier submission tool REACH-IT is being adapted to reject submissions outside of a joint registration and is, therefore, closed. The tool will re-open on 27 January at 10:00 EET.

As of 27 January, you will no longer be able to submit a registration dossier separately if a registration for the same substance already exists.
Similarly, you will not be able to update your registration, which has been submitted individually, if another registration for the same substance exists in REACH-IT.
If your registration is not in line with the joint submission obligation, it will be rejected at the ‘business rules' step of your REACH-IT submission and you will be instructed to co-operate with the existing registrants of the same substance and submit jointly. This means that you need to discuss with other companies about substance sameness, share data and costs with them and, subsequently, submit your registration as part of a joint submission.