From 226ca3a1d2fe4b0c9a133d579dca919205f86707 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Mon, 19 Jan 2026 02:58:33 +0000
Subject: [PATCH 1/2] Initial plan


From d60068caa85f49e6c6edcb8ec1a29603c0931b5b Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Mon, 19 Jan 2026 03:15:07 +0000
Subject: [PATCH 2/2] Add POST LRO exportBinary operation with bytes response
 type

Co-authored-by: msyyc <70930885+msyyc@users.noreply.github.com>
---
 ...-specs-add-export-binary-lro-2026-01-19.md |   7 +
 packages/azure-http-specs/assets/image.png    | Bin 0 -> 2992 bytes
 packages/azure-http-specs/spec-summary.md     | 568 +++++++++++++++---
 .../operation-templates/lro.tsp               |  87 +++
 .../operation-templates/mockapi.ts            | 115 ++++
 packages/azure-http-specs/specs/helper.ts     |   7 +
 6 files changed, 706 insertions(+), 78 deletions(-)
 create mode 100644 .chronus/changes/azure-http-specs-add-export-binary-lro-2026-01-19.md
 create mode 100644 packages/azure-http-specs/assets/image.png
 create mode 100644 packages/azure-http-specs/specs/helper.ts

diff --git a/.chronus/changes/azure-http-specs-add-export-binary-lro-2026-01-19.md b/.chronus/changes/azure-http-specs-add-export-binary-lro-2026-01-19.md
new file mode 100644
index 0000000000..6354c7b120
--- /dev/null
+++ b/.chronus/changes/azure-http-specs-add-export-binary-lro-2026-01-19.md
@@ -0,0 +1,7 @@
+---
+changeKind: feature
+packages:
+  - "@azure-tools/azure-http-specs"
+---
+
+Add POST LRO test case `exportBinary` whose response type is `bytes` in the Azure Resource Manager operation templates spec.
diff --git a/packages/azure-http-specs/assets/image.png b/packages/azure-http-specs/assets/image.png
new file mode 100644
index 0000000000000000000000000000000000000000..42fe8dc14560b0046bf0f3f00b7a471fa0346e36
GIT binary patch
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diff --git a/packages/azure-http-specs/spec-summary.md b/packages/azure-http-specs/spec-summary.md
index ef9310d6ba..96ed063739 100644
--- a/packages/azure-http-specs/spec-summary.md
+++ b/packages/azure-http-specs/spec-summary.md
@@ -161,6 +161,72 @@ Example input:
 
 Output: None (204/empty response)
 
+### Azure_ClientGenerator_Core_ClientDefaultValue_getHeaderParameter
+
+- Endpoint: `get /azure/client-generator-core/client-default-value/header-parameter`
+
+Test case 4: `@clientDefaultValue` for header parameters.
+This scenario tests that client default values are correctly applied to header parameters.
+
+Expected header parameters:
+Accept: "application/json;odata.metadata=none" (default)
+x-custom-header: "default-value" (default)
+
+Expected response: 204 No Content
+
+### Azure_ClientGenerator_Core_ClientDefaultValue_getOperationParameter
+
+- Endpoint: `get /azure/client-generator-core/client-default-value/operation-parameter`
+
+Test case 2: `@clientDefaultValue` for operation parameter.
+This scenario tests that client default values are correctly applied to operation parameters.
+
+Expected query parameter:
+name: "test"
+pageSize: 10 (default)
+format: "json" (default)
+
+Expected response: 204 No Content
+
+### Azure_ClientGenerator_Core_ClientDefaultValue_getPathParameter
+
+- Endpoint: `get /azure/client-generator-core/client-default-value/path-parameter/{segment1}/{segment2}`
+
+Test case 3: `@clientDefaultValue` for first path segment.
+This scenario has 2 path segments and tests client default value on the first segment.
+
+Expected path parameters:
+segment1: "default-segment1" (default)
+segment2: "segment2"
+
+Expected response: 204 No Content
+
+### Azure_ClientGenerator_Core_ClientDefaultValue_putModelProperty
+
+- Endpoint: `put /azure/client-generator-core/client-default-value/model-property`
+
+Test case 1: `@clientDefaultValue` for model property.
+This scenario tests that client default values are correctly applied to model properties.
+
+Expected input body:
+
+```json
+{
+  "name": "test"
+}
+```
+
+Expected response body:
+
+```json
+{
+  "name": "test",
+  "timeout": 30,
+  "tier": "standard",
+  "retry": true
+}
+```
+
 ### Azure_ClientGenerator_Core_ClientInitialization_HeaderParam
 
 - Endpoints:
@@ -316,75 +382,9 @@ client.getStandalone();
 client.deleteStandalone();
 ```
 
-### Azure_ClientGenerator_Core_ClientDefaultValue_getOperationParameter
-
-- Endpoint: `get /azure/client-generator-core/client-default-value/operation-parameter`
-
-Test case 2: `@clientDefaultValue` for operation parameter.
-This scenario tests that client default values are correctly applied to operation parameters.
-
-Expected query parameter:
-name: "test"
-pageSize: 10 (default)
-format: "json" (default)
+### Azure_ClientGenerator_Core_ClientLocation_MoveMethodParameterToClient_BlobOperations
 
-Expected response: 204 No Content
-
-### Azure_ClientGenerator_Core_ClientDefaultValue_getHeaderParameter
-
-- Endpoint: `get /azure/client-generator-core/client-default-value/header-parameter`
-
-Test case 4: `@clientDefaultValue` for header parameters.
-This scenario tests that client default values are correctly applied to header parameters.
-
-Expected header parameters:
-Accept: "application/json;odata.metadata=none" (default)
-x-custom-header: "default-value" (default)
-
-Expected response: 204 No Content
-
-### Azure_ClientGenerator_Core_ClientDefaultValue_getPathParameter
-
-- Endpoint: `get /azure/client-generator-core/client-default-value/path-parameter/{segment1}/{segment2}`
-
-Test case 3: `@clientDefaultValue` for first path segment.
-This scenario has 2 path segments and tests client default value on the first segment.
-
-Expected path parameters:
-segment1: "default-segment1" (default)
-segment2: "segment2"
-
-Expected response: 204 No Content
-
-### Azure_ClientGenerator_Core_ClientDefaultValue_putModelProperty
-
-- Endpoint: `put /azure/client-generator-core/client-default-value/model-property`
-
-Test case 1: `@clientDefaultValue` for model property.
-This scenario tests that client default values are correctly applied to model properties.
-
-Expected input body:
-
-```json
-{
-  "name": "test"
-}
-```
-
-Expected response body:
-
-```json
-{
-  "name": "test",
-  "timeout": 30,
-  "tier": "standard",
-  "retry": true
-}
-```
-
-### Azure_ClientGenerator_Core_ClientLocation_MoveMethodParameterToClient
-
-- Endpoint: `get /azure/client-generator-core/client-location/blob`
+- Endpoint: `get /azure/client-generator-core/client-location/move-method-parameter-to-client/blob`
 
 Test moving a method parameter to client.
 
@@ -399,12 +399,11 @@ Expected response:
 - Status: 200
 - Body: {"id": "blob-001", "name": "testblob.txt", "size": 1024, "path": "/testcontainer/testblob.txt"}
 
-### Azure_ClientGenerator_Core_ClientLocation_MoveToExistingSubClient
+### Azure_ClientGenerator_Core_ClientLocation_MoveToExistingSubClient_UserOperations
 
 - Endpoints:
-  - `get /azure/client-generator-core/client-location/admin`
-  - `get /azure/client-generator-core/client-location/user`
-  - `get /azure/client-generator-core/client-location/user`
+  - `get /azure/client-generator-core/client-location/move-to-existing-sub-client/user`
+  - `get /azure/client-generator-core/client-location/move-to-existing-sub-client/user`
 
 Test moving an operation from one sub client to another existing sub client.
 
@@ -415,11 +414,11 @@ Expected client structure:
 - Interface UserOperations should contain only operation `getUser`
 - Interface AdminOperations should contain operations `getAdminInfo` and `deleteUser` (moved from UserOperations)
 
-### Azure_ClientGenerator_Core_ClientLocation_MoveToNewSubClient
+### Azure_ClientGenerator_Core_ClientLocation_MoveToNewSubClient_ProductOperations
 
 - Endpoints:
-  - `get /azure/client-generator-core/client-location/products`
-  - `get /azure/client-generator-core/client-location/products/archive`
+  - `get /azure/client-generator-core/client-location/move-to-new-sub-client/products`
+  - `get /azure/client-generator-core/client-location/move-to-new-sub-client/products/archive`
 
 Test moving an operation to a new sub client specified by string name.
 
@@ -430,11 +429,11 @@ Expected client structure:
 - Interface ProductOperations should contain only operation `listProducts`
 - A new sub client "ArchiveOperations" should be created containing operation `archiveProduct`
 
-### Azure_ClientGenerator_Core_ClientLocation_MoveToRootClient
+### Azure_ClientGenerator_Core_ClientLocation_MoveToRootClient_ResourceOperations
 
 - Endpoints:
-  - `get /azure/client-generator-core/client-location/resource`
-  - `get /azure/client-generator-core/client-location/health`
+  - `get /azure/client-generator-core/client-location/move-to-root-client/resource`
+  - `get /azure/client-generator-core/client-location/move-to-root-client/health`
 
 Test moving an operation to the root client.
 
@@ -2168,6 +2167,280 @@ Expected response body:
 }
 ```
 
+### Azure_ResourceManager_MultiServiceOlderVersions_Compute_VirtualMachines_createOrUpdate
+
+- Endpoint: `put https://management.azure.com`
+
+Test that a client can expose operations from multiple services using older API versions. This operation should be called like this: `client.virtualMachines.createOrUpdate(...)`.
+
+PUT (create or update) a Virtual Machine.
+Expected path: /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Compute/virtualMachinesOld/vm-old1
+Expected query parameter: api-version=2024-11-01
+Expected request body:
+
+```json
+{
+  "location": "eastus",
+  "properties": {
+    "size": "Standard_D2s_v3"
+  }
+}
+```
+
+Expected response body:
+
+```json
+{
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Compute/virtualMachinesOld/vm-old1",
+  "name": "vm-old1",
+  "type": "Microsoft.Compute/virtualMachinesOld",
+  "location": "eastus",
+  "properties": {
+    "provisioningState": "Succeeded",
+    "size": "Standard_D2s_v3"
+  }
+}
+```
+
+### Azure_ResourceManager_MultiServiceOlderVersions_Compute_VirtualMachines_get
+
+- Endpoint: `get https://management.azure.com`
+
+Test that a client can expose operations from multiple services using older API versions. This operation should be called like this: `client.virtualMachines.get(...)`.
+
+GET a Virtual Machine.
+Expected path: /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Compute/virtualMachinesOld/vm-old1
+Expected query parameter: api-version=2024-11-01
+
+Expected response body:
+
+```json
+{
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Compute/virtualMachinesOld/vm-old1",
+  "name": "vm-old1",
+  "type": "Microsoft.Compute/virtualMachinesOld",
+  "location": "eastus",
+  "properties": {
+    "provisioningState": "Succeeded",
+    "size": "Standard_D2s_v3"
+  }
+}
+```
+
+### Azure_ResourceManager_MultiServiceOlderVersions_ComputeDisk_Disks_createOrUpdate
+
+- Endpoint: `put https://management.azure.com`
+
+Test that a client can expose operations from multiple services using older API versions. This operation should be called like this: `client.disks.createOrUpdate(...)`.
+
+PUT (create or update) a Disk resource.
+Expected path: /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Compute/disksOld/disk-old1
+Expected query parameter: api-version=2024-03-02
+Expected request body:
+
+```json
+{
+  "location": "eastus",
+  "properties": {
+    "diskSizeGB": 128
+  }
+}
+```
+
+Expected response body:
+
+```json
+{
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Compute/disksOld/disk-old1",
+  "name": "disk-old1",
+  "type": "Microsoft.Compute/disksOld",
+  "location": "eastus",
+  "properties": {
+    "provisioningState": "Succeeded",
+    "diskSizeGB": 128
+  }
+}
+```
+
+### Azure_ResourceManager_MultiServiceOlderVersions_ComputeDisk_Disks_get
+
+- Endpoint: `get https://management.azure.com`
+
+Test that a client can expose operations from multiple services using older API versions. This operation should be called like this: `client.disks.get(...)`.
+
+GET a Disk resource.
+Expected path: /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Compute/disksOld/disk-old1
+Expected query parameter: api-version=2024-03-02
+
+Expected response body:
+
+```json
+{
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Compute/disksOld/disk-old1",
+  "name": "disk-old1",
+  "type": "Microsoft.Compute/disksOld",
+  "location": "eastus",
+  "properties": {
+    "provisioningState": "Succeeded",
+    "diskSizeGB": 128
+  }
+}
+```
+
+### Azure_ResourceManager_MultiServiceSharedModels_Compute_VirtualMachines_createOrUpdate
+
+- Endpoint: `put https://management.azure.com`
+
+Test that a client can expose operations from multiple services with shared models. This operation should be called like this: `client.virtualMachines.createOrUpdate(...)`.
+
+PUT (create or update) a Virtual Machine.
+Expected path: /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Compute/virtualMachinesShared/vm-shared1
+Expected query parameter: api-version=2025-05-01
+Expected request body:
+
+```json
+{
+  "location": "eastus",
+  "properties": {
+    "metadata": {
+      "createdBy": "user@example.com",
+      "tags": {
+        "environment": "production"
+      }
+    }
+  }
+}
+```
+
+Expected response body:
+
+```json
+{
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Compute/virtualMachinesShared/vm-shared1",
+  "name": "vm-shared1",
+  "type": "Microsoft.Compute/virtualMachinesShared",
+  "location": "eastus",
+  "properties": {
+    "provisioningState": "Succeeded",
+    "metadata": {
+      "createdAt": "2025-01-01T00:00:00Z",
+      "createdBy": "user@example.com",
+      "tags": {
+        "environment": "production"
+      }
+    }
+  }
+}
+```
+
+### Azure_ResourceManager_MultiServiceSharedModels_Compute_VirtualMachines_get
+
+- Endpoint: `get https://management.azure.com`
+
+Test that a client can expose operations from multiple services with shared models. This operation should be called like this: `client.virtualMachines.get(...)`.
+
+GET a Virtual Machine.
+Expected path: /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Compute/virtualMachinesShared/vm-shared1
+Expected query parameter: api-version=2025-05-01
+
+Expected response body:
+
+```json
+{
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Compute/virtualMachinesShared/vm-shared1",
+  "name": "vm-shared1",
+  "type": "Microsoft.Compute/virtualMachinesShared",
+  "location": "eastus",
+  "properties": {
+    "provisioningState": "Succeeded",
+    "metadata": {
+      "createdAt": "2025-01-01T00:00:00Z",
+      "createdBy": "user@example.com",
+      "tags": {
+        "environment": "production"
+      }
+    }
+  }
+}
+```
+
+### Azure_ResourceManager_MultiServiceSharedModels_Storage_StorageAccounts_createOrUpdate
+
+- Endpoint: `put https://management.azure.com`
+
+Test that a client can expose operations from multiple services with shared models. This operation should be called like this: `client.storageAccounts.createOrUpdate(...)`.
+
+PUT (create or update) a Storage Account.
+Expected path: /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Storage/storageAccounts/account1
+Expected query parameter: api-version=2025-02-01
+Expected request body:
+
+```json
+{
+  "location": "westus",
+  "properties": {
+    "metadata": {
+      "createdBy": "admin@example.com",
+      "tags": {
+        "department": "engineering"
+      }
+    }
+  }
+}
+```
+
+Expected response body:
+
+```json
+{
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Storage/storageAccounts/account1",
+  "name": "account1",
+  "type": "Microsoft.Storage/storageAccounts",
+  "location": "westus",
+  "properties": {
+    "provisioningState": "Succeeded",
+    "metadata": {
+      "createdAt": "2025-01-02T00:00:00Z",
+      "createdBy": "admin@example.com",
+      "tags": {
+        "department": "engineering"
+      }
+    }
+  }
+}
+```
+
+### Azure_ResourceManager_MultiServiceSharedModels_Storage_StorageAccounts_get
+
+- Endpoint: `get https://management.azure.com`
+
+Test that a client can expose operations from multiple services with shared models. This operation should be called like this: `client.storageAccounts.get(...)`.
+
+GET a Storage Account.
+Expected path: /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Storage/storageAccounts/account1
+Expected query parameter: api-version=2025-02-01
+
+Expected response body:
+
+```json
+{
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Microsoft.Storage/storageAccounts/account1",
+  "name": "account1",
+  "type": "Microsoft.Storage/storageAccounts",
+  "location": "westus",
+  "properties": {
+    "provisioningState": "Succeeded",
+    "metadata": {
+      "createdAt": "2025-01-02T00:00:00Z",
+      "createdBy": "admin@example.com",
+      "tags": {
+        "department": "engineering"
+      }
+    }
+  }
+}
+```
+
 ### Azure_ResourceManager_NonResource_NonResourceOperations_create
 
 - Endpoint: `put https://management.azure.com/subscriptions/{subscriptionId}/providers/Microsoft.NonResource/locations/{location}/otherParameters/{parameter}`
@@ -2506,6 +2779,145 @@ Expected response body:
 }
 ```
 
+### Azure_ResourceManager_OperationTemplates_Lro_exportBinary
+
+- Endpoint: `post https://management.azure.com`
+
+Resource POST operation that returns binary data.
+Service returns both Location and Azure-AsyncOperation header on initial request.
+final-state-via: location
+
+Expected verb: POST
+Expected path: /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Azure.ResourceManager.OperationTemplates/orders/order1/exportBinary
+Expected query parameter: api-version=2023-12-01-preview
+Expected request body:
+
+```json
+{
+  "sourceId": "source1"
+}
+```
+
+Expected response status code: 202
+Expected response headers:
+
+- Azure-AsyncOperation={endpoint}/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_aao
+- Location={endpoint}/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_location
+  Expected no response body
+
+Whether you do polling through AAO, Location or combined, first one will respond with provisioning state "InProgress", second one with "Succeeded".
+
+AAO first poll.
+Expected verb: GET
+Expected URL: {endpoint}/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_aao
+Expected status code: 200
+Expected response body:
+
+```json
+{
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_aao",
+  "name": "lro_post_binary_aao",
+  "status": "InProgress",
+  "startTime": "2024-11-08T01:41:53.5508583+00:00"
+}
+```
+
+AAO second poll.
+Expected verb: GET
+Expected URL: {endpoint}/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_aao
+Expected status code: 200
+Expected response body:
+
+```json
+{
+  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_aao",
+  "name": "lro_post_binary_aao",
+  "status": "Succeeded",
+  "startTime": "2024-11-08T01:41:53.5508583+00:00",
+  "endTime": "2024-11-08T01:42:41.5354192+00:00"
+}
+```
+
+Location first poll.
+Expected verb: GET
+Expected URL: {endpoint}/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_location
+Expected status code: 202
+Expected no response body
+
+Location second poll.
+Expected verb: GET
+Expected URL: {endpoint}/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_location
+Expected status code: 200
+Expected response header: Content-Type=application/octet-stream
+Expected response body: binary content (image.png file)
+
+### Azure_ResourceManager_OperationTemplates_LroPaging_postPagingLro
+
+- Endpoint: `post https://management.azure.com`
+
+Resource POST operation that returns a LRO with paging.
+
+Step 1: Initial Request
+Expected verb: POST
+Expected path: /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Azure.ResourceManager.OperationTemplates/products/default/postPagingLro
+Expected query parameter: api-version=2023-12-01-preview
+Expected response: 202 Accepted with Location and Retry-After headers.
+
+Step 2: Polling Request
+Expected verb: GET
+Expected path: /subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_paging_post_location
+Expected query parameter: api-version=2023-12-01-preview
+Expected response: 202 Accepted with Location and Retry-After headers.
+
+Step 3: Final Result Request
+Expected verb: GET
+Expected path: /subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_paging_post_location
+Expected query parameter: api-version=2023-12-01-preview
+Expected response: 200 OK with a paged result. The response body contains a "nextLink" field.
+Expected response body:
+
+```json
+{
+  "value": [
+    {
+      "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Azure.ResourceManager.OperationTemplates/products/product1",
+      "name": "product1",
+      "type": "Azure.ResourceManager.OperationTemplates/products",
+      "location": "eastus",
+      "properties": {
+        "provisioningState": "Succeeded",
+        "productId": "product1"
+      }
+    }
+  ],
+  "nextLink": "..."
+}
+```
+
+Step 4: Next Page Request
+Expected verb: GET
+Expected path: /subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_paging_post_location/nextPage
+Expected query parameter: api-version=2023-12-01-preview
+Expected response: 200 OK with the second page of results.
+Expected response body:
+
+```json
+{
+  "value": [
+    {
+      "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Azure.ResourceManager.OperationTemplates/products/product2",
+      "name": "product2",
+      "type": "Azure.ResourceManager.OperationTemplates/products",
+      "location": "eastus",
+      "properties": {
+        "provisioningState": "Succeeded",
+        "productId": "product2"
+      }
+    }
+  ]
+}
+```
+
 ### Azure_ResourceManager_OperationTemplates_OptionalBody_get
 
 - Endpoint: `get https://management.azure.com`
diff --git a/packages/azure-http-specs/specs/azure/resource-manager/operation-templates/lro.tsp b/packages/azure-http-specs/specs/azure/resource-manager/operation-templates/lro.tsp
index 6d5d6f2187..a43db5f352 100644
--- a/packages/azure-http-specs/specs/azure/resource-manager/operation-templates/lro.tsp
+++ b/packages/azure-http-specs/specs/azure/resource-manager/operation-templates/lro.tsp
@@ -4,6 +4,7 @@ import "@azure-tools/typespec-azure-core";
 import "@azure-tools/typespec-azure-resource-manager";
 import "@typespec/spector";
 
+using Http;
 using Rest;
 using Spector;
 
@@ -36,6 +37,19 @@ model ExportResult {
   content: string;
 }
 
+model ExportBinaryRequest {
+  @doc("Source identifier for binary export.")
+  sourceId: string;
+}
+
+model ExportBinaryResult {
+  @header contentType: "application/octet-stream";
+
+  @doc("Binary content of the exported data.")
+  @body
+  data: bytes;
+}
+
 @armResourceOperations
 interface Lro {
   @scenario
@@ -218,6 +232,79 @@ interface Lro {
       Azure.Core.Foundations.RetryAfterHeader
   >;
 
+  @scenario
+  @scenarioDoc("""
+    Resource POST operation that returns binary data.
+    Service returns both Location and Azure-AsyncOperation header on initial request.
+    final-state-via: location
+    
+    Expected verb: POST
+    Expected path: /subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/test-rg/providers/Azure.ResourceManager.OperationTemplates/orders/order1/exportBinary
+    Expected query parameter: api-version=2023-12-01-preview
+    Expected request body:
+    ```json
+    {
+      "sourceId": "source1"
+    }
+    ```
+    Expected response status code: 202
+    Expected response headers: 
+      - Azure-AsyncOperation={endpoint}/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_aao
+      - Location={endpoint}/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_location
+    Expected no response body
+    
+    Whether you do polling through AAO, Location or combined, first one will respond with provisioning state "InProgress", second one with "Succeeded".
+    
+    AAO first poll.
+    Expected verb: GET
+    Expected URL: {endpoint}/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_aao
+    Expected status code: 200
+    Expected response body:
+    ```json
+    {
+      "id": "/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_aao",
+      "name": "lro_post_binary_aao",
+      "status" : "InProgress",
+      "startTime": "2024-11-08T01:41:53.5508583+00:00"
+    }
+    ```
+    
+    AAO second poll.
+    Expected verb: GET
+    Expected URL: {endpoint}/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_aao
+    Expected status code: 200
+    Expected response body:
+    ```json
+    {
+      "id": "/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_aao",
+      "name": "lro_post_binary_aao",
+      "status" : "Succeeded",
+      "startTime": "2024-11-08T01:41:53.5508583+00:00",
+      "endTime": "2024-11-08T01:42:41.5354192+00:00"
+    }
+    ```
+    
+    Location first poll.
+    Expected verb: GET
+    Expected URL: {endpoint}/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_location
+    Expected status code: 202
+    Expected no response body
+    
+    Location second poll.
+    Expected verb: GET
+    Expected URL: {endpoint}/subscriptions/00000000-0000-0000-0000-000000000000/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_location
+    Expected status code: 200
+    Expected response header: Content-Type=application/octet-stream
+    Expected response body: binary content (image.png file)
+    """)
+  exportBinary is ArmResourceActionAsync<
+    Order,
+    ExportBinaryRequest,
+    ExportBinaryResult,
+    LroHeaders = ArmCombinedLroHeaders<FinalResult = ExportBinaryResult> &
+      Azure.Core.Foundations.RetryAfterHeader
+  >;
+
   @scenario
   @scenarioDoc("""
     Resource DELETE operation.
diff --git a/packages/azure-http-specs/specs/azure/resource-manager/operation-templates/mockapi.ts b/packages/azure-http-specs/specs/azure/resource-manager/operation-templates/mockapi.ts
index 4a623cc3fb..0dbe72ca74 100644
--- a/packages/azure-http-specs/specs/azure/resource-manager/operation-templates/mockapi.ts
+++ b/packages/azure-http-specs/specs/azure/resource-manager/operation-templates/mockapi.ts
@@ -7,6 +7,7 @@ import {
   ScenarioMockApi,
   withServiceKeys,
 } from "@typespec/spec-api";
+import { pngFile } from "../../../helper.js";
 
 export const Scenarios: Record<string, ScenarioMockApi> = {};
 
@@ -80,6 +81,7 @@ const validProductListResultPage2 = {
 };
 let createOrReplacePollCount = 0;
 let postPollCount = 0;
+let postBinaryPollCount = 0;
 let deletePollCount = 0;
 
 // operation list
@@ -381,6 +383,119 @@ Scenarios.Azure_ResourceManager_OperationTemplates_Lro_export = passOnSuccess([
   },
 ]);
 
+Scenarios.Azure_ResourceManager_OperationTemplates_Lro_exportBinary = passOnSuccess([
+  {
+    // LRO POST binary initial request
+    uri: "/subscriptions/:subscriptionId/resourceGroups/:resourceGroup/providers/Azure.ResourceManager.OperationTemplates/orders/:orderName/exportBinary",
+    method: "post",
+    request: {
+      pathParams: {
+        subscriptionId: SUBSCRIPTION_ID_EXPECTED,
+        resourceGroup: RESOURCE_GROUP_EXPECTED,
+        orderName: "order1",
+      },
+      query: {
+        "api-version": "2023-12-01-preview",
+      },
+      body: json({
+        sourceId: "source1",
+      }),
+    },
+    response: {
+      status: 202,
+      headers: {
+        location: dyn`${dynItem("baseUrl")}/subscriptions/${SUBSCRIPTION_ID_EXPECTED}/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_location`,
+        "azure-asyncoperation": dyn`${dynItem("baseUrl")}/subscriptions/${SUBSCRIPTION_ID_EXPECTED}/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_aao`,
+      },
+    },
+    handler: (req: MockRequest) => {
+      postBinaryPollCount = 0;
+      return {
+        status: 202,
+        headers: {
+          location: `${req.baseUrl}/subscriptions/${SUBSCRIPTION_ID_EXPECTED}/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_location`,
+          "azure-asyncoperation": `${req.baseUrl}/subscriptions/${SUBSCRIPTION_ID_EXPECTED}/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_aao`,
+        },
+      };
+    },
+    kind: "MockApiDefinition",
+  },
+  {
+    // LRO POST binary poll intermediate/get final result - Location Header
+    uri: "/subscriptions/:subscriptionId/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_location",
+    method: "get",
+    request: {
+      pathParams: {
+        subscriptionId: SUBSCRIPTION_ID_EXPECTED,
+      },
+      query: {
+        "api-version": "2023-12-01-preview",
+      },
+    },
+    response: {
+      status: 200,
+    },
+    handler: (req: MockRequest) => {
+      const response =
+        // first status will be 202, second and forward be 200 with binary content
+        postBinaryPollCount > 0
+          ? {
+              status: 200,
+              body: {
+                contentType: "application/octet-stream",
+                rawContent: pngFile,
+              },
+            }
+          : { status: 202 };
+
+      postBinaryPollCount += 1;
+      return response;
+    },
+    kind: "MockApiDefinition",
+  },
+  {
+    // LRO POST binary poll intermediate/get final result - Azure-AsyncOperation Header
+    uri: "/subscriptions/:subscriptionId/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_aao",
+    method: "get",
+    request: {
+      pathParams: {
+        subscriptionId: SUBSCRIPTION_ID_EXPECTED,
+      },
+      query: {
+        "api-version": "2023-12-01-preview",
+      },
+    },
+    response: {
+      status: 200,
+    },
+    handler: (req: MockRequest) => {
+      const aaoResponse = {
+        id: `/subscriptions/${SUBSCRIPTION_ID_EXPECTED}/providers/Azure.ResourceManager.OperationTemplates/locations/eastus/operations/lro_post_binary_aao`,
+        name: "lro_post_binary_aao",
+        startTime: "2024-11-08T01:41:53.5508583+00:00",
+      };
+      // first provisioningState will be "InProgress", second and forward be "Succeeded"
+      const responseBody =
+        postBinaryPollCount > 0
+          ? {
+              ...aaoResponse,
+              status: "Succeeded",
+              endTime: "2024-11-08T01:42:41.5354192+00:00",
+            }
+          : { ...aaoResponse, status: "InProgress" };
+
+      const response = {
+        status: 200, // aao always returns 200 with response body
+        body: json(responseBody),
+      };
+
+      postBinaryPollCount += 1;
+      return response;
+    },
+    kind: "MockApiDefinition",
+  },
+]);
+
 Scenarios.Azure_ResourceManager_OperationTemplates_Lro_delete = passOnSuccess([
   {
     // LRO DELETE initial request
diff --git a/packages/azure-http-specs/specs/helper.ts b/packages/azure-http-specs/specs/helper.ts
new file mode 100644
index 0000000000..5ea4745396
--- /dev/null
+++ b/packages/azure-http-specs/specs/helper.ts
@@ -0,0 +1,7 @@
+import { resolvePath } from "@typespec/compiler";
+import { readFileSync } from "fs";
+import { fileURLToPath } from "url";
+
+const root = resolvePath(fileURLToPath(import.meta.url), "../../../");
+
+export const pngFile = readFileSync(resolvePath(root, "assets/image.png"));