updated

Author: AmandaAZ

support/azure/azure-kubernetes/error-codes/availabilityzonenotsupported-error.md

@@ -1,7 +1,7 @@
 ---
 title: Troubleshoot AvailabilityZoneNotSupported Error Code
 description: Learn how to troubleshoot the AvailabilityZoneNotSupported error when you try to create an Azure Kubernetes Service cluster in a set of zones.
-ms.date: 05/26/2025
+ms.date: 05/28/2025
 ms.reviewer: marcha, skuchipudi, v-weizhu
 ms.service: azure-kubernetes-service
 ms.custom: sap:Create, Upgrade, Scale and Delete operations (cluster or nodepool)
@@ -17,40 +17,46 @@ Access to [Azure CLI](/cli/azure/get-started-with-azure-cli).
 
 ## Symptoms
 
-An AKS cluster creation fails in the requested availability zone and you receive an "AvailabilityZoneNotSupported" error.
-
-Here's an example of the error message:
+An AKS cluster creation fails in requested availability zones and you receive an "AvailabilityZoneNotSupported" error with the following message:
 
 > Preflight validation check for resource(s) for container service \<resource-name> in resource group \<resource-group-name> failed. Message: The zone(s) '1' for resource 'agentpoolName' is not supported.The supported zones for location '\<location>' are 'A', 'B'
 
 ## Cause
 
-The issue occurs if the requested SKU isn't available in the requested zone or there's restriction on the Azure subscription.
+The issue occurs because the requested SKU isn't available in the requested zones or there's a restriction on the Azure subscription.
 
-## Solution
+## Solution 1: Ensure SKU availability in the requested zones
 
-To resolve this issue, verify if the requested SKU isn't available in the requested zone by running the following commands:
+1. Get SKU details by running one of the following commands:
 
-```azurecli
-az vm list-skus -l <location> --size <SKU> 
-```
+    - List SKU details for the specific location and size:
 
-```azurecli
-az rest --method get \
-    --url "https://management.azure.com/subscriptions/<subscription>/providers/Microsoft.Compute/skus?%24filter=location+eq+%27<location>%27&api-version=2022-03-01"  >> availableSkus.txt
-```
+        ```azurecli
+        az vm list-skus -l <location> --size <SKU> 
+        ```
+
+    - Retrieve all SKU details for a subscription and location:
+
+        ```azurecli
+        az rest --method get \
+            --url "https://management.azure.com/subscriptions/<subscription>/providers/Microsoft.Compute/skus?%24filter=location+eq+%27<location>%27&api-version=2022-03-01"  >> availableSkus.txt
+        ```
 
-> [!NOTE]
-> Replace `<subscription>` and `<locaiton>` in the URL accordingly.
+    > [!NOTE]
+    > Replace `<subscription>`, `<SKU>` and `<locaiton>` in the commands accordingly.
 
-Then, search for the requested SKU information in the command output. If you see the following information, it indicates that your subscription doesn't have access to zones in the requested region.
+2. Check the requested SKU information and available zones from the command output.
+
+3. If the requested SKU isn't available in the requested zones, \<what operations should users do?>
+
+If you see the following information in the *availableSkus.txt* file, it indicates that your subscription doesn't have access to zones in the requested region.
 
 ```output
 "restrictions": [
                 {
                     "type": "Zone",
                     "values": [
-                        "xxxxx"
+                        "<zone>"
                     ],
                     "restrictionInfo": {
                         "locations": [
@@ -67,6 +73,10 @@ Then, search for the requested SKU information in the command output. If you see
             ]
 ```
 
-In this case, request access to the region or zone from the [Azure portal](https://ms.portal.azure.com/#blade/Microsoft_Azure_Support/HelpAndSupportBlade/newsupportrequest) by following instructions in [Azure region access request process](../../general/region-access-request-process.md).
+In this case, [request access to the restricted region or zone](#solution-2-request-access-to-the-restricted-region-or-zone).
+
+## Solution 2: Request access to the restricted region or zone
+
+If your subscription doesn't have access to zones in the requested region, request access to the region or zone from the [Azure portal](https://ms.portal.azure.com/#blade/Microsoft_Azure_Support/HelpAndSupportBlade/newsupportrequest) by following the [Azure region access request process](../../general/region-access-request-process.md).
 
 [!INCLUDE [Azure Help Support](../../../includes/azure-help-support.md)]