When running either the "Add a vCenter Server Instance" or "Update a vCenter Server Instance" with the Additional Endpoint URL's defined (<URL>/pbm, or <URL>/sms/sdk), the workflow will fail with "<URL>/pbm invocation failed with "com.vmware.vim.vmomi.core.exception.UnmarshallException: Unable to unmarshal response"
Aria Automation Orchestrator 8.18.1
vCenter Server 8.0
An Entrust CloudControl system is in place that all traffic to the vCenter flows through, and is preventing access to the additional endpoint URLs.
Entrust provided new JAR files for their software that allowed access to the URL's