diff --git a/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2021-10-18-preview/vi.json b/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2021-10-18-preview/vi.json
index e39a2ec625e8..aa6fa5935157 100644
--- a/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2021-10-18-preview/vi.json
+++ b/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2021-10-18-preview/vi.json
@@ -669,8 +669,9 @@
           "example": "2b9bcf6d-39d5-460a-a6bb-7b40b7ccf139"
         },
         "accountId": {
-          "description": "The account's data-plane ID",
+          "description": "The account's data-plane ID. This can be set only when connecting an existing classic account",
           "type": "string",
+          "default": "00000000-0000-0000-0000-000000000000",
           "example": "3575690b-a569-449c-ab7b-11020f948f76"
         },
         "accountName": {
diff --git a/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2021-10-27-preview/vi.json b/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2021-10-27-preview/vi.json
index d4c087c91d33..009d23a96928 100644
--- a/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2021-10-27-preview/vi.json
+++ b/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2021-10-27-preview/vi.json
@@ -782,8 +782,9 @@
           "example": "2b9bcf6d-39d5-460a-a6bb-7b40b7ccf139"
         },
         "accountId": {
-          "description": "The account's data-plane ID",
+          "description": "The account's data-plane ID. This can be set only when connecting an existing classic account",
           "type": "string",
+          "default": "00000000-0000-0000-0000-000000000000",
           "example": "3575690b-a569-449c-ab7b-11020f948f76"
         },
         "accountName": {
diff --git a/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2021-11-10-preview/vi.json b/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2021-11-10-preview/vi.json
index e660adac73b4..93fcbd4069a4 100644
--- a/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2021-11-10-preview/vi.json
+++ b/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2021-11-10-preview/vi.json
@@ -782,8 +782,9 @@
           "example": "2b9bcf6d-39d5-460a-a6bb-7b40b7ccf139"
         },
         "accountId": {
-          "description": "The account's data-plane ID",
+          "description": "The account's data-plane ID. This can be set only when connecting an existing classic account",
           "type": "string",
+          "default": "00000000-0000-0000-0000-000000000000",
           "example": "3575690b-a569-449c-ab7b-11020f948f76"
         },
         "accountName": {
diff --git a/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2022-04-13-preview/vi.json b/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2022-04-13-preview/vi.json
index 6d7f7be065a5..33fe469c821a 100644
--- a/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2022-04-13-preview/vi.json
+++ b/specification/vi/resource-manager/Microsoft.VideoIndexer/preview/2022-04-13-preview/vi.json
@@ -782,8 +782,9 @@
           "example": "2b9bcf6d-39d5-460a-a6bb-7b40b7ccf139"
         },
         "accountId": {
-          "description": "The account's data-plane ID",
+          "description": "The account's data-plane ID. This can be set only when connecting an existing classic account",
           "type": "string",
+          "default": "00000000-0000-0000-0000-000000000000",
           "example": "3575690b-a569-449c-ab7b-11020f948f76"
         },
         "accountName": {