Hello all, In [1] baymodel code was removed, although it still seems to be listed in the API-ref. Story [2] states it's been deprecated for a long time, but a quick check failed to see this documented anywhere. Heat still supports baymodel and the removal is causing failures. Blocking the use of python-magnumclient 4.0.0[3] inzed, even though the 4.0.0 release is clearly meant for zed. I can see a couple of paths forward. 0. Remove the documentation in the api-ref for baymodels 1. Remove the support in heat for baymodels (I think the newer clusters API can be used instead?) 2. Revert the change in magnumclient and re-release etc etc 3. Keep 4.0.0 for the Antelope release, and reset the stable/zed branch python-magnumclient to fd0cb1e (before the removal of baymodels) Obviously option 1 looks like the least disruptive change, but potentially causes a problem for heat depending on the published state of baymodel support [1] https://review.opendev.org/c/openstack/python-magnumclient/+/803629 [2] https://storyboard.openstack.org/#!/story/2009104 [3] https://review.opendev.org/c/openstack/requirements/+/858089 -- Yours Tony.