diff --git a/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2019-01-01-preview/SecurityInsights.json b/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2019-01-01-preview/SecurityInsights.json
index 544974958663..fbe5b86c5add 100644
--- a/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2019-01-01-preview/SecurityInsights.json
+++ b/specification/securityinsights/resource-manager/Microsoft.SecurityInsights/preview/2019-01-01-preview/SecurityInsights.json
@@ -572,6 +572,7 @@
           "Cases"
         ],
         "description": "Gets all cases.",
+        "deprecated": true,
         "operationId": "Cases_List",
         "parameters": [
           {
@@ -632,6 +633,7 @@
           "Cases"
         ],
         "description": "Gets a case.",
+        "deprecated": true,
         "operationId": "Cases_Get",
         "parameters": [
           {
@@ -678,6 +680,7 @@
           "Cases"
         ],
         "description": "Creates or updates the case.",
+        "deprecated": true,
         "operationId": "Cases_CreateOrUpdate",
         "parameters": [
           {
@@ -733,6 +736,7 @@
           "Cases"
         ],
         "description": "Delete the case.",
+        "deprecated": true,
         "operationId": "Cases_Delete",
         "parameters": [
           {
@@ -781,6 +785,7 @@
           "CaseComments"
         ],
         "description": "Gets all case comments.",
+        "deprecated": true,
         "operationId": "Comments_ListByCase",
         "parameters": [
           {
@@ -845,6 +850,7 @@
           "CaseComments"
         ],
         "description": "Gets a case comment.",
+        "deprecated": true,
         "operationId": "Cases_GetComment",
         "parameters": [
           {
@@ -894,6 +900,7 @@
           "CaseComments"
         ],
         "description": "Creates the case comment.",
+        "deprecated": true,
         "operationId": "CaseComments_CreateComment",
         "parameters": [
           {