Access and registration to the CBAM platform must always be done by selecting the CUSTOMS option, never Carbon Border Adjustment Mechanism (CBAM)

This can be done by both the importer choosing the economic operator option, and the customs representative who has submitted import declarations subject to CBAM as an indirect representative. And in this way each one, importer or customs representative, will choose the corresponding option. 

At the moment it is not possible to access as a proxy for the above, although we are working with MITERD , the competent authority in the matter, to find a possible solution.

In order to clarify how to access the CBAM Registry, the ppt has been updated, which you will find available in the CBAM section.