An additive manufacturing material management station , comprising: a build material supply container with a data memory chip ; a build material supply conduit with a build material supply connector to releasably connect between a management station body and the build material supply container to couple a flow of a fluid carrying a supply of fresh building material from within the build material supply container to the management station body; and a station data processor , wherein the supply connector comprises: a supply connector body; a suction nozzle projecting from the connector body to form a mating fit with an outlet of the build material supply container in use; and a data communicator to provide data communication between the station data processor and the data memory chip of the build material supply container , wherein the station data processor is provided to prevent fresh build material from being drawn into the material management station from the build material supply container if the station data processor detects that a recorded residual quantity of fresh building material in the build material supply container is at or below a threshold level, and wherein the station data processor is provided to write data to the data memory chip to update the record of the recorded residual quantity of fresh build material as or after fresh build material is drawn out of the build material supply container , wherein the data memory chip is protected by a restriction that limits the recorded residual quantity of fresh build material to counting a monotonically decreasing recorded residual quantity. a build material supply container with a data memory chip ; a build material supply conduit with a build material supply connector to releasably connect between a management station body and the build material supply container to couple a flow of a fluid carrying a supply of fresh building material from within the build material supply container to the management station body; and a station data processor , wherein the supply connector comprises: a supply connector body; a suction nozzle projecting from the connector body to form a mating fit with an outlet of the build material supply container in use; and a data communicator to provide data communication between the station data processor and the data memory chip of the build material supply container , a supply connector body; a suction nozzle projecting from the connector body to form a mating fit with an outlet of the build material supply container in use; and a data communicator to provide data communication between the station data processor and the data memory chip of the build material supply container , wherein the station data processor is provided to prevent fresh build material from being drawn into the material management station from the build material supply container if the station data processor detects that a recorded residual quantity of fresh building material in the build material supply container is at or below a threshold level, and wherein the station data processor is provided to write data to the data memory chip to update the record of the recorded residual quantity of fresh build material as or after fresh build material is drawn out of the build material supply container , wherein the data memory chip is protected by a restriction that limits the recorded residual quantity of fresh build material to counting a monotonically decreasing recorded residual quantity. <EOS>