[Observium] Help understand log entries

Hello All,

Could some one help me decode a log entry in Observium? We get this entry every 5 minutes in Observium, but nothing changes on the interface (That we know of :) ).

2015-07-01 13:30:45 svs-za-jhb-ne-mse-001 ge-1/0/1.1557 Interface changed: [ifAlias] ABC CPE1 Interface | VRF:ABC-VRF | Vlan 1557 | CircuitNo:027JOHA1802009912345 -> ABC CPE1 Interface | VRF:ABC-VRF | Vlan 1557 | CircuitNo:027JOHA1802009901391

Is there a way to see what triggered this in Observium?

Regards,

Rudolf