1. An apparatus configured to construct an indoor map, the apparatus comprising: a processor configured to, extract cloud point information from scan information associated with points inside a target facility, construct the indoor map of the target facility based on the cloud point information by, acquiring attribute information associated with each of the points, the attribute information including at least one of (i) numerical or textual data, or (ii) a determined structure, performing a drawing operation based on the cloud point information, mapping the attribute information to space information associated with the target facility to construct the indoor map, and determine whether the drawing operation contains errors by detecting whether the attribute information in the indoor map is at least one of (i) incorrect or (ii) missing.