Hi,
there are some requirements that should be met if you need the OneView toppology discovered.
Let's first start with a guide, written by Leon, who answers lots of posts here also:
SCOM 2016: Integrating with HPE OneView 4.0
Please ensure that ports are opened (80 or 443), the account has enough permissions to discover the OneView topology.
Have you checked the OperationsManager event logs on the management server?
Regards,
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