Conveyor system for the transporting of goods items, with one or more transport units, each of which comprises a load carrying means for accommodating a transport container, the transport units being movable along a conveyor track in or opposite to a direction of conveying, with at least one discharge facility for discharging an empty transport container or one laden with a goods item onto the load carrying means of a transport unit, and at least one retrieval facility for retrieving an empty transport container or one laden with a goods item from a load carrying means of a transport unit, where the transport containers comprise first, or small, transport containers with a first length and a first width, which is smaller than the first length, at least two of which may in each case be accommodated next to one another on a load carrying means of a transport unit with their longitudinal extension transverse to the direction of conveying, and where each transport unit is provided with a first retaining means and each small transport container is provided with a second retaining means, the first retaining means being designed to interact with the second retaining means of one or more small transport containers accommodated transversely to the direction of conveying, and to restrict movement of a small transport container in or transversely to the direction of conveying relative to the load carrying means in a predetermined measure; and method for the transporting of goods items using the conveyor system.