Abstract: An electronic labelling assembly for a multi-part container includes a sleeve-shaped supplementary element which includes a coupling structure and which is configured to be coupled with respect to a longitudinal axis of the supplementary element by the coupling structure to an outer surface of a primary closure of the container and to surround the primary closure. The labelling assembly further includes an RFID functional unit having an RFID chip and an antenna structure coupled thereto. The supplementary element and the RFID functional unit are formed in coordination with each other and coupled to each other so that the RFID functional unit is attachable to the primary closure of the container by the supplementary element.