If you have set up Equipment Types with "Has Addresses" selected, the additional tab, "Service Addresses" is included when adding that type of equipment to the inventory.
Select the Service Addresses tab.
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Right-click in the Service Addresses tab and select Find Existing Service Addresses.
Follow the procedure described in Finding an Existing Service Address below. Once you have added service addresses to the equipment, they are displayed on the Service Addresses tab.
Knowledge Articles > Desktop Client User Guide > Customer Management > Managing Catalog Items on an Account > Adding Features and Services > Assigning/Editing a Service