In this section:
Definitions and Parameter Sets can be referenced by other objects. Referenced objects are deemed in use and cannot be deleted (as per arrow reference in the following figures: Dependencies of the Realm Definitions; Dependencies of the Application ID, Vendor ID, AVP, and AVP Alias Definitions; Command Code Definition Dependency; Dependencies of the Security, Capacity, SCTP, and CER Parameter Sets).
A Realm Definition can be referenced by DSC Nodes, Adjacent Diameter Nodes, Realm Routing Records, and Topology Mapping Records (see the following figure).
Consider the following for Figure Dependencies of the Application ID, Vendor ID, AVP, and AVP Alias Definitions:
Figure Dependencies of the Application ID, Vendor ID, AVP, and AVP Alias Definitions, (1) indicates that AVP Alias Definitions can also be referenced by Modification Record commands.
A Command Code Definition can be referenced by Command Code Routing Records (see the following figure).
Security, Capacity, SCTP, and CER Parameter Sets can be referenced by ADN Connections. A Security Parameter Set also can be referenced by Transport Servers (see the following figure).