In a company which is a reporting declarant, who can request access to the Transitional Registry?
Any physical person that can prove he/she represents the legal person can contact the NCA of the Member State where that legal person is established to request access to the CBAM Registry as CBAM reporting declarant. The NCA is responsible for verifying the legitimacy of the requests and grant CBAM Declarant access permissions. The owner of the account that will be granted CBAM Declarant access by the NCA is responsible to keep the account confidential and delegate the access to additional accounts (employees) of the company.
Source: EC’s Questions and Answers on CBAM