The REST v2 provider could not be reached.
Explanation
The service provider could not be reached to access the data source schema. Either the URL is either incorrect or the provider is not a valid REST v2 provider.
User response
Ensure that the URL you entered in the REST v2 Schema Discovery wizard is valid. To verify that a schema is valid, paste the schema URL into a web browser. If the XML content loads correctly in the web browser so that the XML content is visible, the URL is valid. If the URL is valid, the issue might be that the dependencies could not be resolved or the server could not be reached.