3GPP 23.501 v20.2.0 — the document's own text
6.3.1.2 Location information
Taught in 6. How one function finds another (The 5G system architecture, in depth), 18. Being served by somebody else's network (The 5G system architecture, in depth), 3. How one function calls another (The 5G system architecture, overview).
The location information describes the network location of the NF instance. It can consist of one or more levels. Each level describes one location aspect, such as geographic location, data centre, cluster, etc. An NF instance has only one location.
The location information may be used to select the NF service instance or NF instance from a particular network location based on local configuration.
NOTE: The location information in TS 29.510 [58] specifies the granularity of location information. It is up to each deployment to determine the granularity of location information to be used.