System with at least two self-traveling floor treatment apparatuses

A system comprising:

• at least two self-traveling floor treatment apparatuses, each of the floor treatment apparatuses having a navigation and self-localization device that is designed for generating an environment map based on environment data of an environment of the floor treatment apparatus,
• a detection device configured for recording the environment map,
• a common memory unit for storing environment maps;
• and
• a computing unit assigned to the floor treatment apparatuses, wherein the computing unit is designed for comparing an environment map of a first one of the floor treatment apparatuses with an environment map of a second one of the floor treatment apparatuses and/or with an environment map that is already stored in the common memory unit, and for specifying which of the environment maps is to be stored in the common memory unit as a master map based on a defined selection criterion,
• wherein in order to specify a certain environment map as the master map to be used by the at least two self-traveling floor treatment apparatuses, the environment maps are compared with one another and evaluated based on one or more defined selection criteria, wherein the environment map, which best meets the defined selection criteria, is specified as the master map,
• wherein the defined selection criterion comprises a depth of detail of the environment map in the form of a dimension of a representation of the environment within the environment map and/or a representation of the environment with an indication of a height in the form of color coding.