In a relaying apparatus, a storage stores a plurality of sets of first device information, and second device information assigned to a first set of first device information identifying one image processing apparatus from among image processing apparatuses. The controller communicates with the one image processing apparatus and a service-providing apparatus. The controller receives replacement request information from the one information processing terminal via the communication interface. The replacement request information including old first device information and new first device information. The old first device information indicates the one image processing apparatus. The new first device information indicates another image processing apparatus. The controller replaces the first set of first device information so that the first set of first device information identifies the another image processing apparatus indicated by the new first device information instead of the one image processing apparatus indicated by the old first device information.