Hello Everyone, As per discussion over ML, Tempest started the JSON schema strict validation for Volume APIs response [1]. Because it may affect the interop certification, it was explained to the Interop team as well as in the Board of Director meeting[2]. In Train, Tempest started implementing the validation and found an API change where the new field was added in API response without versioning[3] (Cinder has API microversion mechanism). IMO, that was not the correct way to change the API and as per API-WG guidelines[4] any field added/modified/removed in API should be with microverison(means old versions/user should not be affected by that change) and must for API interoperability. With JSON schema validation, Tempest verifies the API interoperability recommended behaviour by API-WG. But as per IRC conversion with cinder team, we have different opinion on API interoperability and how API should be changed under microversion mechanism. I would like to have a conclusion on this so that Tempest can verify or leave the Volume API for strict validation. [1] http://lists.openstack.org/pipermail/openstack-discuss/2018-November/000358.html [2] - http://lists.openstack.org/pipermail/openstack-discuss/2019-March/003652.html - http://lists.openstack.org/pipermail/openstack-discuss/2019-March/003655.html [3] https://bugs.launchpad.net/tempest/+bug/1843762 https://review.opendev.org/#/c/439461/ [4] https://specs.openstack.org/openstack/api-wg/guidelines/api_interoperability.html -gmann