diff --git a/extensions/openpower-pels/registry/message_registry.json b/extensions/openpower-pels/registry/message_registry.json
index 932c6d1..0629f01 100644
--- a/extensions/openpower-pels/registry/message_registry.json
+++ b/extensions/openpower-pels/registry/message_registry.json
@@ -1546,6 +1546,102 @@
         },
 
         {
+            "Name": "xyz.openbmc_project.Sensor.Threshold.Error.SoftShutdownAlarmHigh",
+            "Subsystem": "power",
+            "ComponentID": "0x2800",
+            "Severity": "predictive",
+            "ActionFlags": ["service_action", "report"],
+
+            "SRC": {
+                "ReasonCode": "0x2807",
+                "Words6To9": {}
+            },
+
+            "Callouts": [
+                {
+                    "CalloutList": [
+                        {
+                          "Priority": "high",
+                          "SymbolicFRU": "ambient_temp"
+                        }
+                    ]
+                }
+            ],
+
+            "Documentation": {
+                "Description": "The ambient temperature passed the EPOW3 limit.",
+                "Message": "The ambient temperature passed the EPOW3 limit. The system will shut down if temp doesn't decrease.",
+                "Notes": [
+                    "This error occurs when the ambient temperature surpassed",
+                    "the EPOW3 shutdown limit."
+                ]
+            }
+        },
+
+        {
+            "Name": "xyz.openbmc_project.Sensor.Threshold.Error.SoftShutdownAlarmHighClear",
+            "Subsystem": "power",
+            "ComponentID": "0x2800",
+            "Severity": "non_error",
+            "ActionFlags": ["report"],
+            "EventType": "env_normal",
+
+            "SRC": {
+                "ReasonCode": "0x2808",
+                "Words6To9": {}
+            },
+
+            "Callouts": [
+                {
+                    "CalloutList": [
+                        {
+                          "Priority": "high",
+                          "SymbolicFRU": "ambient_temp_back"
+                        }
+                    ]
+                }
+            ],
+
+            "Documentation": {
+                "Description": "The ambient temperature is back under the EPOW3 limit.",
+                "Message": "The ambient temperature is back under the EPOW3 limit."
+            }
+        },
+
+        {
+            "Name": "xyz.openbmc_project.Sensor.Threshold.Error.HardShutdownAlarmHigh",
+            "Subsystem": "power",
+            "ComponentID": "0x2800",
+            "Severity": "unrecoverable",
+            "ActionFlags": ["service_action", "report"],
+
+            "SRC": {
+                "ReasonCode": "0x2809",
+                "Words6To9": {}
+            },
+
+            "Callouts": [
+                {
+                    "CalloutList": [
+                        {
+                          "Priority": "high",
+                          "SymbolicFRU": "ambient_temp"
+                        }
+                    ]
+                }
+            ],
+
+            "Documentation": {
+                "Description": "The ambient temperature passed the EPOW4 limit.",
+                "Message": "The ambient temperature passed the EPOW4 limit. The system will shut down",
+                "Notes": [
+                    "This error occurs when the ambient temperature surpassed",
+                    "the EPOW4 shutdown limit."
+                ]
+            }
+        },
+
+        {
             "Name": "com.ibm.VPD.Error.InvalidEepromPath",
             "Subsystem": "cec_vpd",
             "ComponentID": "0x4000",
diff --git a/extensions/openpower-pels/registry/schema/schema.json b/extensions/openpower-pels/registry/schema/schema.json
index 89530b4..a98f01c 100644
--- a/extensions/openpower-pels/registry/schema/schema.json
+++ b/extensions/openpower-pels/registry/schema/schema.json
@@ -293,7 +293,7 @@
             "description": "The event type PEL field. Optional and defaults to na",
             "type": "string",
             "enum": ["na", "misc_information_only", "tracing_event",
-                     "dump_notification"]
+                     "dump_notification", "env_normal"]
         },
 
         "powerFault":
@@ -438,7 +438,7 @@
         {
             "description": "The symbolic FRU callout.",
             "type": "string",
-            "enum": ["service_docs", "pwrsply", "air_mover", "pgood_part", "usb_pgood"]
+            "enum": ["service_docs", "pwrsply", "air_mover", "pgood_part", "usb_pgood", "ambient_temp", "ambient_temp_back", "ambient_perf_loss"]
         },
 
         "symbolicFRUTrusted":