diff --git a/schemas/2021-04-01/Microsoft.Insights.json b/schemas/2021-04-01/Microsoft.Insights.json
index 95f1280d07..1ecef154a9 100644
--- a/schemas/2021-04-01/Microsoft.Insights.json
+++ b/schemas/2021-04-01/Microsoft.Insights.json
@@ -244,10 +244,6 @@
           "type": "string",
           "description": "Description of the data collection endpoint."
         },
-        "immutableId": {
-          "type": "string",
-          "description": "The immutable ID of this data collection endpoint resource. This property is READ-ONLY."
-        },
         "logsIngestion": {
           "oneOf": [
             {