This log saving condition generating device generates a condition for saving log information on a plurality of software modules included in a vehicular electronic control device, and is provided with: an input unit in which the characteristics of the plurality of software modules and saving rules are input; and a condition generating unit that determines, on the basis of the characteristics of the software modules and the saving rules, a timing at which the log information on each of the software modules is obtained, and determines information to be obtained.
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