Observed
When an enterprise only endpoint is accessed by HVAC and the vault server is not licenced. it will return a specific response of "enterprise-only feature" with a status-code 404.

Expected result
I expect a differentiation between a route that is valid but not accessable versus a route that does not exist, either by warning or exception.

Actual result and reasoning why
In most cases HVAC returns Null. as observed here

Possible solution
We could add a check on the 404 + specific message to differentiate between the two states in the VaultError from_status code here:

Would love to help out with the implementation if needed, let me know if this would be implementable and which is the preferred approach.

I personally would prefer the former for example like this:

        ....
        503: VaultDown, 
     } 
  
     exception = _STATUS_EXCEPTION_MAP.get(status_code, UnexpectedError)
     if status_code == 404 and kwargs["message"].contains("enterprise-only"):
        exception = EnterpriseError

     return  exception(*args, **kwargs)

in that case the existing Null checks do not have to be adjusted.