User-Defined Node
A User-Defined Node, or UDN, is any Node whose Node Type was customized or created outside the built-in defaults. UDNs include duplicated default types and entirely new types built in the Node Type Editor.
UDNs let teams encode organization-specific patterns: naming conventions, incremental strategies, platform-specific DDL, and governance columns.
UDNs follow the same Deploy and Refresh lifecycle as default Nodes. Store definitions in version control and test in a Workspace before promoting to Environments.
See User-Defined Nodes and Node Definition.