diff --git a/yaml/xyz/openbmc_project/Logging/IPMI.interface.yaml b/yaml/xyz/openbmc_project/Logging/IPMI.interface.yaml
index 8c2ff14..54e24b8 100644
--- a/yaml/xyz/openbmc_project/Logging/IPMI.interface.yaml
+++ b/yaml/xyz/openbmc_project/Logging/IPMI.interface.yaml
@@ -51,6 +51,48 @@
         - xyz.openbmc_project.Common.Error.InternalFailure
         - xyz.openbmc_project.Common.Error.InvalidArgument
 
+    - name: AddExtended
+      description: >
+        Log a system event record SEL entry with custom SensorType/EventType.
+      parameters:
+        - name: Message
+          type: string
+          description: >
+            The text to log for the event.
+        - name: Path
+          type: path
+          description: >
+            The object path that is generating the SEL entry.
+        - name: SELData
+          type: array[byte]
+          description: >
+            An array of up to 3 bytes of SEL event data.
+        - name: GeneratorID
+          type: uint16
+          description: >
+            The Generator ID of the component requesting the new SEL entry.
+            In most cases this will be 0x20 (the BMC Generator ID).
+        - name: eventType
+          type: byte
+          description: >
+            Type of trigger for the event and event direction.
+        - name: sensorType
+          type: byte
+          description: >
+            Sensor Type Code for sensor that generated the event.
+        - name: sensorNum
+          type: byte
+          description: >
+            Number of sensor that generated the event.
+      returns:
+        - name: RecordID
+          type: uint16
+          description: >
+            The Record ID of the new SEL entry.
+      errors:
+        - xyz.openbmc_project.Common.Error.InternalFailure
+        - xyz.openbmc_project.Common.Error.InvalidArgument
+
     - name: IpmiSelAddOem
       description: >
         Log an OEM record type SEL entry requested from external to the BMC.