TM Forum Open API (Apache 2.0) Resource Usage API.
TMF771 Resource Usage Management provides a standardised mechanism for usage management such as creation, update, retrieval, import and export of a collection of resource usage. A Resource usage represents is an occurrence of usage on a Resource, which can be further used to generate interest to a billing system, and can have charges applied to it. It is comprised of characteristics which define all attributes known for a particular type of Resource usage.
The resources in this repository are a mirror of the official versions, published here for your convenience. The authoritative source of information for this API is: https://www.tmforum.org/oda/open-apis/directory/