registered vcenter marked (unusable) in vrealize orchestrator

Hi Everyone,

I am using vCenter 6.5 with external PSC. I try to connect this vCenter server from vRealize Orchestator 7.0.1. I received following message in VRO. "(Unusale) https://vcenter/sdk

And Error messages are,  "Axis Fault:; Nested exception is: org.xml.sax.SAXException:  Invalid element in com.vmware.vim.vi3.ServiceContent - vStorageObjectManager"

Thanks.