Several possibilities:
• AU: a solution may be to show the certification numbers and details on the monitor display in a certain mode.
• JK: for OEM no markings are required

HJ: markings are needed to check certification.

JK: proposes that for OEM no markings are required (is covered by other docs). There should be a means for identification, not necessarily e-markings.

RG: KWA requires at least one approval mark on the central unit.

HJ: leave it up to the manufacturer which (main) component is marked.

RG: serial no. on the different parts can be used as a means of identification. Approval marking should be on the main part.

JK proposes:
• e-marking on one of the components, including IDs of all parts
• leave the possibility to display the information on the monitor display.
• means of ID on all parts.
• For OEM no marking required.