A method for assembling a handling unit of filled containers and a corresponding method, where the handling unit comprises different container types being different with respect to at least the height, base area, base area shape or the mechanical load capacity of the containers, and the supplied containers are arranged on a handling unit carrier. The arrangement of the containers with respect to the number and/or the position and/or the rotational position of the containers on the handling unit carrier is made in dependence on at least one of the above container parameters, and the handling units can be produced flexibly and with a high packing density.