diff --git a/xyz/openbmc_project/Logging/Entry.interface.yaml b/xyz/openbmc_project/Logging/Entry.interface.yaml
index 2f3540e..70e8d6a 100755
--- a/xyz/openbmc_project/Logging/Entry.interface.yaml
+++ b/xyz/openbmc_project/Logging/Entry.interface.yaml
@@ -22,6 +22,14 @@
       type: string
       description: >
           The message description of the error event entry.
+    - name: EventId
+      type: string
+      description: >
+          An implementation-dependent unique identifier for this event. This
+          property is different from Id in the sense that Id is a unique number
+          per event but EventId is an optional identifier that is associated
+          with the event. The content of this property is implementation
+          defined.
     - name: AdditionalData
       type: array[string]
       description: >