warnings about mystery interfaces in C# projects

Every time I build my C# Solution, I get a handful of warnings about interfaces that I've never seen or written. I tried Googling for some of them, but get no hits. Could these possibly 开发者_如何学运维be buried in an assembly I'm referencing? If so, is there any way to make these warnings go away?

Interface 'IAlertable' is marked as [dual], but does not derive from IDispatch. It will be converted as an IUnknown-derived interface.

Interface 'ICustomizationPermissionsReports' is marked as [dual], but does not derive from IDispatch. It will be converted as an IUnknown-derived interface.

Interface 'IAlertable2' is marked as [dual], but does not derive from IDispatch. It will be converted as an IUnknown-derived interface.

They must come form a COM assembly you are referencing. You could try to find out which one. It looks like the wrapper code was written/generated incorrectly.

And Visual Studio does have a "suppress warnings: " text box but I am at a loss as to what to type there.
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These are interfaces to HP Quality Center OTA-API "Interop.TDAPIOLELib", an ActiveX COM Type Library. Check your references.