diff --git a/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Conversations_ListChatReadReceiptsWithPageSize.json b/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Conversations_ListChatReadReceiptsWithPageSize.json
index 9386c3cf4fb7..2815eff3bcf4 100644
--- a/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Conversations_ListChatReadReceiptsWithPageSize.json
+++ b/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Conversations_ListChatReadReceiptsWithPageSize.json
@@ -21,9 +21,9 @@
           },
           {
             "senderCommunicationIdentifier": {
-              "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a",
+              "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715",
               "communicationUser": {
-                "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a"
+                "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715"
               }
             },
             "chatMessageId": "1591768249318",
diff --git a/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Messages_ListChatMessagesWithPageSize.json b/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Messages_ListChatMessagesWithPageSize.json
index 8be72a33e4d0..d9594a6315ff 100644
--- a/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Messages_ListChatMessagesWithPageSize.json
+++ b/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Messages_ListChatMessagesWithPageSize.json
@@ -99,17 +99,17 @@
                 },
                 {
                   "communicationIdentifier": {
-                    "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10c",
+                    "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715",
                     "communicationUser": {
-                      "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10c"
+                      "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715"
                     }
                   }
                 },
                 {
                   "communicationIdentifier": {
-                    "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10d",
+                    "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_f13a9208-0bb8-45c0-916c-f3ed922728ce",
                     "communicationUser": {
-                      "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10d"
+                      "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_f13a9208-0bb8-45c0-916c-f3ed922728ce"
                     }
                   }
                 }
diff --git a/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Participants_AddChatParticipants.json b/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Participants_AddChatParticipants.json
index 2c5550f803f9..7a66bddaef6c 100644
--- a/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Participants_AddChatParticipants.json
+++ b/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Participants_AddChatParticipants.json
@@ -7,9 +7,9 @@
       "participants": [
         {
           "communicationIdentifier": {
-            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a",
+            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715",
             "communicationUser": {
-              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a"
+              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715"
             }
           },
           "displayName": "Alex",
@@ -27,9 +27,9 @@
         },
         {
           "communicationIdentifier": {
-            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10c",
+            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_f13a9208-0bb8-45c0-916c-f3ed922728ce",
             "communicationUser": {
-              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10c"
+              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_f13a9208-0bb8-45c0-916c-f3ed922728ce"
             }
           },
           "displayName": "Rama",
@@ -43,12 +43,12 @@
       "body": {
         "invalidParticipants": [
           {
-            "target": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10c",
+            "target": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_a34d2d65-d72f-4c48-a12c-2d5c9ac75a1a",
             "code": "403",
             "message": "Permissions check failed"
           },
           {
-            "target": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a",
+            "target": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_f6762773-e33a-4727-985f-50bd1d197c7b",
             "code": "404",
             "message": "Not found"
           }
diff --git a/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Participants_ListChatParticipantsWithPageSize.json b/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Participants_ListChatParticipantsWithPageSize.json
index 822ef846c3e8..719beb5371b6 100644
--- a/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Participants_ListChatParticipantsWithPageSize.json
+++ b/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Participants_ListChatParticipantsWithPageSize.json
@@ -11,9 +11,9 @@
         "value": [
           {
             "communicationIdentifier": {
-              "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a",
+              "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715",
               "communicationUser": {
-                "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a"
+                "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715"
               }
             },
             "displayName": "Jane",
diff --git a/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Threads_CreateChatThread.json b/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Threads_CreateChatThread.json
index 1632996cfa2a..413d718a22f7 100644
--- a/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Threads_CreateChatThread.json
+++ b/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Threads_CreateChatThread.json
@@ -7,9 +7,9 @@
       "participants": [
         {
           "communicationIdentifier": {
-            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a",
+            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715",
             "communicationUser": {
-              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a"
+              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715"
             }
           },
           "displayName": "Jane"
@@ -25,18 +25,18 @@
         },
         {
           "communicationIdentifier": {
-            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10c",
+            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_a34d2d65-d72f-4c48-a12c-2d5c9ac75a1a",
             "communicationUser": {
-              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10c"
+              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_a34d2d65-d72f-4c48-a12c-2d5c9ac75a1a"
             }
           },
           "displayName": "Bob"
         },
         {
           "communicationIdentifier": {
-            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10d",
+            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_f6762773-e33a-4727-985f-50bd1d197c7b",
             "communicationUser": {
-              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10d"
+              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_f6762773-e33a-4727-985f-50bd1d197c7b"
             }
           },
           "displayName": "Peter"
@@ -55,20 +55,20 @@
           "topic": "Lunch",
           "createdOn": "2020-06-06T05:55:41.6460000Z",
           "createdByCommunicationIdentifier": {
-            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a",
+            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715",
             "communicationUser": {
-              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a"
+              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715"
             }
           }
         },
         "invalidParticipants": [
           {
-            "target": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10c",
+            "target": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_a34d2d65-d72f-4c48-a12c-2d5c9ac75a1a",
             "code": "403",
             "message": "Permissions check failed"
           },
           {
-            "target": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10d",
+            "target": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_f6762773-e33a-4727-985f-50bd1d197c7b",
             "code": "404",
             "message": "Not found"
           }
diff --git a/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Threads_CreateChatThreadWithIdempotencyToken.json b/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Threads_CreateChatThreadWithIdempotencyToken.json
index 4bd465bfb78e..d71d47c52f5e 100644
--- a/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Threads_CreateChatThreadWithIdempotencyToken.json
+++ b/specification/communication/data-plane/Chat/preview/2021-04-05-preview6/examples/Threads_CreateChatThreadWithIdempotencyToken.json
@@ -8,9 +8,9 @@
       "participants": [
         {
           "communicationIdentifier": {
-            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a",
+            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715",
             "communicationUser": {
-              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a"
+              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715"
             }
           },
           "displayName": "Jane"
@@ -26,18 +26,18 @@
         },
         {
           "communicationIdentifier": {
-            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10c",
+            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_a34d2d65-d72f-4c48-a12c-2d5c9ac75a1a",
             "communicationUser": {
-              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10c"
+              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_a34d2d65-d72f-4c48-a12c-2d5c9ac75a1a"
             }
           },
           "displayName": "Bob"
         },
         {
           "communicationIdentifier": {
-            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10d",
+            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_f6762773-e33a-4727-985f-50bd1d197c7b",
             "communicationUser": {
-              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10d"
+              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_f6762773-e33a-4727-985f-50bd1d197c7b"
             }
           },
           "displayName": "Peter"
@@ -56,20 +56,20 @@
           "topic": "Lunch",
           "createdOn": "2020-06-06T05:55:41.6460000Z",
           "createdByCommunicationIdentifier": {
-            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a",
+            "rawId": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715",
             "communicationUser": {
-              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10a"
+              "id": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_c94ff260-162d-46d6-94fd-e79f4d213715"
             }
           }
         },
         "invalidParticipants": [
           {
-            "target": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10c",
+            "target": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_a34d2d65-d72f-4c48-a12c-2d5c9ac75a1a",
             "code": "403",
             "message": "Permissions check failed"
           },
           {
-            "target": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_0e59221d-0c1d-46ae-9544-c963ce56c10d",
+            "target": "8:acs:8540c0de-899f-5cce-acb5-3ec493af3800_f6762773-e33a-4727-985f-50bd1d197c7b",
             "code": "404",
             "message": "Not found"
           }