There is described a controlling method to be employed in a printing system that includes: a plurality of image forming apparatuses, each of which is capable of assigning a name to setting information in regard to a printing operation and also capable of registering the setting information in association with the name thereof; and a specific apparatus to be coupled to the plurality of image forming apparatuses. The method includes: acquiring plural sets of setting information, each of which is the setting information registered in each of the plurality of image forming apparatuses in association with the name thereof; determining whether or not at least two of the names assigned to the plural sets of setting information are cognominal; and displaying a message, indicating a fact that the same name is assigned to at least two of the plural sets of the setting information, when the names are cognominal.