FAS3220 Dual Chassis HA interconnect error

Have a 2-node FAS2554 running ONTAP 9. I see this error message in the event log a couple of times an hour from both nodes:

csm.sessionFailed: Cluster interconnect session (req=uwfclu1c-01:dblade, rsp=uwfclu1c-02:dblade, uniquifier=08053e1f8099756e) failed with record state ACTIVE and error CSM_CONNABORTED

The error message appears to be benign so I'm just wondering where this is coming from. 

Thanks,

--Carl