ECHA carries out a technical completeness check on each incoming registration and PPORD notification as set out in Article 20(2) of the REACH Regulation. This is done to ensure that the dossiers include all the information that is required. The quality or adequacy of the provided data or justifications are not assessed as part of the completeness check.
Completeness checks are performed both on new registrations and updates of existing registrations. All the information in a dossier is checked, whether it is newly submitted or already part of the previous submission. The completeness check can only be successful if all the information in the dossier is complete.