The issue that was preventing the deletion of these certificates can be shown from the screenshot below.
Running API Command: GET /api/v1/cluster/nodes/<certificate-id>
"protection": 'REQUIRE_OVERIDE' is preventing the certificated from being deleted from the UI.
Using the command below to allow overwright and delete the CWS certificate below:
Log into NSX Manager and elevate to root.
curl -v -k -u admin -X DELETE -H 'X-Allow-Overwrite:true' 'https://localhost/api/v1/trust-management/certificates/<certificate-id>
If you are contacting Broadcom support about this issue, in order to aid a timely response and resolution, please provide the following:
Handling Log Bundles for offline review with Broadcom support: