It looks like Requirement #9 for Datastreams is missing from the re-doc.
https://docs.ogc.org/is/23-002/23-002.html#_req_datastream_ref-from-system
vs.
https://developer.ogc.org/api/connectedsystems/example-1/?url=../api/part2/openapi/openapi-connectedsystems-2.yaml#tag/Observations
Identifier | /req/datastream/ref-from-deployment
-- | --
Requirements class 2: /req/datastream
The server implements http://www.opengis.net/spec/ogcapi-connectedsystems-1/1.0/req/deployment
The server SHALL implement a DataStream resources endpoint at path {api_root}/deployments/{depId}/datastreams for each available Deployment resource.
The endpoint SHALL only expose the DataStream resources associated to a system that was deployed during the Deployment with ID depId, and whose valid time intersects the deployment time period.
Identifier /req/datastream/ref-from-deployment
Included in Requirements class 2: [/req/datastream](https://docs.ogc.org/is/23-002/23-002.html#_req_datastream)
Conditions
The server implements http://www.opengis.net/spec/ogcapi-connectedsystems-1/1.0/req/deployment
A
The server SHALL implement a DataStream resources endpoint at path {api_root}/deployments/{depId}/datastreams for each available Deployment resource.
B
The endpoint SHALL only expose the DataStream resources associated to a system that was deployed during the Deployment with ID depId, and whose valid time intersects the deployment time period.
It looks like Requirement #9 for Datastreams is missing from the re-doc.
https://docs.ogc.org/is/23-002/23-002.html#_req_datastream_ref-from-system
vs.
https://developer.ogc.org/api/connectedsystems/example-1/?url=../api/part2/openapi/openapi-connectedsystems-2.yaml#tag/Observations
Identifier | /req/datastream/ref-from-deployment -- | -- Requirements class 2: /req/datastream The server implements http://www.opengis.net/spec/ogcapi-connectedsystems-1/1.0/req/deployment The server SHALL implement a DataStream resources endpoint at path {api_root}/deployments/{depId}/datastreams for each available Deployment resource. The endpoint SHALL only expose the DataStream resources associated to a system that was deployed during the Deployment with ID depId, and whose valid time intersects the deployment time period. Identifier /req/datastream/ref-from-deployment Included in Requirements class 2: [/req/datastream](https://docs.ogc.org/is/23-002/23-002.html#_req_datastream) Conditions The server implements http://www.opengis.net/spec/ogcapi-connectedsystems-1/1.0/req/deploymentA
The server SHALL implement a DataStream resources endpoint at path {api_root}/deployments/{depId}/datastreams for each available Deployment resource.
B
The endpoint SHALL only expose the DataStream resources associated to a system that was deployed during the Deployment with ID depId, and whose valid time intersects the deployment time period.