diff --git a/quickstart/201-k8s-cluster-with-tf-and-aks/readme.md b/quickstart/201-k8s-cluster-with-tf-and-aks/readme.md
index dbf94824..f4a7ceeb 100644
--- a/quickstart/201-k8s-cluster-with-tf-and-aks/readme.md
+++ b/quickstart/201-k8s-cluster-with-tf-and-aks/readme.md
@@ -25,8 +25,8 @@ This template provisions an [AKS / Azure Kubernetes service (also known as a Man
 | `resource_group_name_prefix` | Prefix of the resource group name that's combined with a random ID so name is unique in your Azure subscription. | rg |
 | `resource_group_location` | Location of the resource group. | eastus |
 | `node_count` | Initial number of nodes which should exist in this Node Pool. Value must be between 1 and 1000. | 3 |
-| `log_analytics_workspace_location` | Location of the log analytics workspace. | eastus |
-| `log_analytics_workspace_sku` | SKU of the Log Analytics Workspace. | PerGB2018 |
+| `log_analytics_workspace_location` | Location of the Log Analytics workspace. | eastus |
+| `log_analytics_workspace_sku` | SKU of the Log Analytics workspace. The SKU of the log analytics workspace. Choose from: Free, PerNode, Premium, Standard, Standalone, Unlimited, CapacityReservation, PerGB2018 | PerGB2018 |
 
 ## Example
 
diff --git a/quickstart/201-k8s-cluster-with-tf-and-aks/variables.tf b/quickstart/201-k8s-cluster-with-tf-and-aks/variables.tf
index 6093806b..47046edf 100644
--- a/quickstart/201-k8s-cluster-with-tf-and-aks/variables.tf
+++ b/quickstart/201-k8s-cluster-with-tf-and-aks/variables.tf
@@ -21,15 +21,20 @@ variable "node_count" {
 variable "log_analytics_workspace_location" {
   type        = string
   default     = "eastus"
-  description = "Location of the log analytics workspace."
+  description = "Location of the Log Analytics workspace."
 }
 
 # For Log Analytics pricing, refer to:
 # https://azure.microsoft.com/pricing/details/monitor
 variable "log_analytics_workspace_sku" {
   type        = string
-  description = ""
+  description = "The SKU of the Log Analytics workspace. Choose from: Free, PerNode, Premium, Standard, Standalone, Unlimited, CapacityReservation, PerGB2018"
   default     = "PerGB2018"
+
+  validation {
+    condition = contains(["Free", "PerNode", "Premium", "Standard", "Standalone", "Unlimited", "CapacityReservation", "PerGB2018"], var.log_analytics_workspace_sku)    
+    error_message = "The Log Analytics workspace SKU must be one of the following: Free, PerNode, Premium, Standard, Standalone, Unlimited, CapacityReservation, PerGB2018"
+  }
 }
 
 variable "msi_id" {