An expansion arrangement, comprising: an expansion device with an adapter device for fastening container bodies (10, 102) and with an expansion apparatus, on which the adapter device is mounted or can be mounted; and at least one container body (10, 102), which is fastened on the adapter device and/or on the expansion structure; wherein the container body (10, 102, 352) is selected from a group consisting of a suitcase (10, 102) for transporting transport goods, a first suitcase of a first size and a second suitcase of a second size and a storage box; wherein the expansion apparatus for spatially expanding a receiving surface of the adapter device for fastening container bodies (10, 102, 352) comprises: a support structure, which is designed for supporting the adapter device over at least part of its circumference; an expansion structure, which is designed for expanding the receiving surface of the adapter device beyond its spatial boundary over at least part of its circumference in a state of the adapter device, in which it is supported by means of the support structure, particularly within a preferably horizontal plane assigned to the receiving surface; fastening structures on an expansion surface of the expansion structure, wherein the fastening structures are designed for fastening the container body (10, 102, 352); wherein the expansion structure is designed for only expanding the adapter device in the region of two opposing lateral edges and adjoining corner regions of the adapter device. an expansion device with an adapter device for fastening container bodies (10, 102) and with an expansion apparatus, on which the adapter device is mounted or can be mounted; and at least one container body (10, 102), which is fastened on the adapter device and/or on the expansion structure; wherein the container body (10, 102, 352) is selected from a group consisting of a suitcase (10, 102) for transporting transport goods, a first suitcase of a first size and a second suitcase of a second size and a storage box; wherein the expansion apparatus for spatially expanding a receiving surface of the adapter device for fastening container bodies (10, 102, 352) comprises: a support structure, which is designed for supporting the adapter device over at least part of its circumference; an expansion structure, which is designed for expanding the receiving surface of the adapter device beyond its spatial boundary over at least part of its circumference in a state of the adapter device, in which it is supported by means of the support structure, particularly within a preferably horizontal plane assigned to the receiving surface; fastening structures on an expansion surface of the expansion structure, wherein the fastening structures are designed for fastening the container body (10, 102, 352); wherein the expansion structure is designed for only expanding the adapter device in the region of two opposing lateral edges and adjoining corner regions of the adapter device. a support structure, which is designed for supporting the adapter device over at least part of its circumference; an expansion structure, which is designed for expanding the receiving surface of the adapter device beyond its spatial boundary over at least part of its circumference in a state of the adapter device, in which it is supported by means of the support structure, particularly within a preferably horizontal plane assigned to the receiving surface; fastening structures on an expansion surface of the expansion structure, wherein the fastening structures are designed for fastening the container body (10, 102, 352); wherein the expansion structure is designed for only expanding the adapter device in the region of two opposing lateral edges and adjoining corner regions of the adapter device.