this is works as designed and actually not an OCUM issue.
OCUM is just visualizing what the built-in health monitor of ONTAP is reporting.
You will see the same error on ONTAP CLI or System Manager as the system cannot distinguish between a port being unused intentially and a faulty port, e.g. due to a broken cable.
If those ports are indeed not used, they have to be explicitely disabled as described in the Fabric MetroCluster Installation and Configuration Guide - page 148:
Disable any unused SAS ports:
SASPortDisable <sas port>
Note:If you are configuring an ATTO 7500N bridge then all the SAS ports A through D
are enabled by default. You must disable the SAS ports that are not being used.
If this post resolved your issue, please help others by selecting ACCEPT AS SOLUTION or adding a KUDO or both.