A connector adapted for removably connecting to a fitting for a lubrication point of a device to be lubricated, said fitting being adapted for removably connecting to said connector to receive a lubricant from the connector, the fitting comprising: - a body in which a fluid conduit is formed for guiding a lubricant, when received from the connector via an inlet of the fluid conduit, into the lubrication point, - an integrated circuit adapted for providing an identification code to identify the fitting, and - a first electrical contact for establishing an electrical path between the integrated circuit and the processor of the connector when a connection between the fitting and the connector is established, wherein said body comprises a fixation end adapted for fastening the fitting into or onto the lubrication point, wherein said integrated circuit is adapted for transmitting data via said first electrical contact to said processor, when a connection between the fitting and the connector is established, said data comprising said identification code, the connector comprising: - a processor for receiving an identification code from the integrated circuit of the fitting when connected thereto, and - a second electrical contact for establishing an electrical path between the integrated circuit of the fitting and the processor via the first electrical contact of the fitting when a connection between the fitting and the connector is established, wherein said processor comprises an electronic memory for storing said received identification code, or an identification of said fitting based on said received identification code, optionally together with a timestamp to indicate when said fitting was mechanically and electrically coupled to the connector and/or together with further data received from a sensor in said fitting or in said connector, wherein said processor is adapted for storing failed connection attempts in said memory, optionally together with a timestamp to indicate when said failed connection attempt took place. - a body in which a fluid conduit is formed for guiding a lubricant, when received from the connector via an inlet of the fluid conduit, into the lubrication point, - an integrated circuit adapted for providing an identification code to identify the fitting, and - a first electrical contact for establishing an electrical path between the integrated circuit and the processor of the connector when a connection between the fitting and the connector is established, wherein said body comprises a fixation end adapted for fastening the fitting into or onto the lubrication point, wherein said integrated circuit is adapted for transmitting data via said first electrical contact to said processor, when a connection between the fitting and the connector is established, said data comprising said identification code, the connector comprising: - a processor for receiving an identification code from the integrated circuit of the fitting when connected thereto, and - a second electrical contact for establishing an electrical path between the integrated circuit of the fitting and the processor via the first electrical contact of the fitting when a connection between the fitting and the connector is established, - a processor for receiving an identification code from the integrated circuit of the fitting when connected thereto, and - a second electrical contact for establishing an electrical path between the integrated circuit of the fitting and the processor via the first electrical contact of the fitting when a connection between the fitting and the connector is established, wherein said processor comprises an electronic memory for storing said received identification code, or an identification of said fitting based on said received identification code, optionally together with a timestamp to indicate when said fitting was mechanically and electrically coupled to the connector and/or together with further data received from a sensor in said fitting or in said connector, wherein said processor is adapted for storing failed connection attempts in said memory, optionally together with a timestamp to indicate when said failed connection attempt took place.