1. A non-transitory computer-readable recording medium having stored therein a program for causing a computer to execute a process, the process comprising: obtaining, from a device having software installed therein, a software identifier for identifying the software, a first error identifier for identifying an error which occurs during installation of the software, prior configuration data of the device at a first time when the error occurs, and posterior configuration data of the device at a second time when the error is resolved; generating new handling data on basis of a difference between the prior configuration data and the posterior configuration data; updating the new handling data on basis of existing handling data, the prior configuration data, and the posterior configuration data to store the updated handling data in a storing unit in association with the software identifier and the first error identifier, the existing handling data being stored in the storing unit in association with the software identifier and including a handling item to be performed for installing the software; and storing, when the existing handling data is not stored in the storing unit, the new handling data in the storing unit in association with the software identifier and the first error identifier.