When the Merge the Equipment Structure item hierarchy from the duplicate EUL to the primary EUL preference is set to Y, the Address Correction utility merges the equipment structure item hierarchies of end user location (duplicate 01) and end user location (duplicate 02) into the equipment structure item hierarchy of end user location (primary). As a result, the end user location (primary) now contains equipment 01 and equipment 02 installed on floor 1 in block A and equipment 03 is installed on floor 2 at sector C in block A.