The Custom Data page (Device Viewer > Device/Network Explorer > Custom Data) displays any configured custom data fields that are used to provide additional information for user visibility in the Device Viewer. Custom data fields are represented by new columns that can be selected for display in a table.
Custom data also appears in tables available on the Network Explorer > Inventory page. To define custom data, click the Settings icon > General Settings > Custom Fields page.
See Defining and Using Custom Fields and Verifying Field Content In Device Viewer and Interface Viewer for more information on the use of custom fields in the Device Viewer.