Note: Take vmware-dr.xml backup before you proceed when applying below change.
To resolve this issue, verify SRM vmware-dr.xml for the the following entries hmsKey and hmsType and remove them.
For appliance:
/opt/vmware/srm/conf/vmware-dr.xml
<extension>
<hmsKey>com.vmware.vcHcx</hmsKey>
<hmsType>com.vmware.hcx</hmsType>
</extension
Restart SRM services and then attempt to create Protection Group