I'm keep getting this error when I'm trying to connect my OpenStak to OSM

Error:

FAILURE Details:

RwcalOpenstackPlugin: Exception: The request you have made requires authentication. (HTTP 401) (Request-ID: req-181919db-d1a1-4a6a-81ca-4daf3961ad57)

Please guide me to overcome this issue. Also as a key and password I have use my keystone credentials, Is that works with OSM or what do I have configure as key and password.

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