Spectrum Device models show model_class as Unknown and users are not able to delete these models in the OneClick Interface.
Corrupted models within the SpectroSERVER database
Release : 20.2.x
Component : Spectrum Discovery & Modeling
Below are steps that can be followed in order to resolve the issue.
1. Run a locater search from model_class attribute equal to unknown.
2. In the list of the models that is returned, you will need to make a note of the model_handle attribute for each.
2. Login to the SpectroSERVER as the Spectrum install user and run the following commands to destroy these models via CLI:
./destroy model mh=Model_Handle_From_Step_2
Once these models have been destroyed, users should now be able to remodel them properly.