To invoke the API you need to obtain an access token with the appropriate permissions. The following curl command shows how a token can be ontained from the keycloak server.
The result will be a JSON document. To invoke the API you need to extract the value of the access_token property. You can then invoke the API by including the value in the Authorization header of requests to the API.
Codes in the 4xx range indicate incorrect or incomplete parameters (e.g., a required parameter was omitted, an operation failed with a 3rd party, etc.)
Codes in the 5xx range indicate an error with Zeroth servers (these are rare)