This value is the numeric remote error code recorded by the vNIC/vHBA profile-set FSM (finite state machine) that UCS Manager runs when it propagates a batch of vNIC/vHBA profile changes to the affected endpoints. A non-zero code here tells an admin that the remote peer involved in that profile-set operation reported a specific failure, letting them correlate the number against Cisco's FSM error code list instead of guessing why the push stalled. For example, if pushing a new vHBA profile set to a blade's adapter fails partway through, this field holds the error code the remote endpoint returned so support staff can look it up while troubleshooting the stuck FSM.