The individual Hosted OpenAPI specifications contain the relative URLs to be used to access the APIs defined by that specification.

These URLs take the form: https://serverRoot/resource-path , where serverRoot is composed of: access-hostname-or-ip:access-port/orchestration/project/instance

access-hostname-or-ip is the entrypoint to the ingress;

access-port of this entrypoint is required only if it is not the default for https.

For example, to GET a ProductOrder defined by a hosted OpenAPI TMF622 v.4.0.0.1.1 for an OSM cloud native instance called "prod" in the project "mobile", the URL would be as follows:

https://access-hostname-or-ip:access-port/orchestration/mobile/prod/productOrderingManagement/v4.0.0.1.1/productOrder

OSM's TMF REST APIs support the HTTP GET and POST operations, while the Fallout Exception API supports the GET operation.