diff --git a/azurerm/data_source_user_assigned_identity.go b/azurerm/data_source_user_assigned_identity.go
index 9d6e08269875..bca2688e49a1 100644
--- a/azurerm/data_source_user_assigned_identity.go
+++ b/azurerm/data_source_user_assigned_identity.go
@@ -17,7 +17,7 @@ func dataSourceArmUserAssignedIdentity() *schema.Resource {
 			"name": {
 				Type:         schema.TypeString,
 				Required:     true,
-				ValidateFunc: validation.StringLenBetween(1, 24),
+				ValidateFunc: validation.StringLenBetween(3, 128),
 			},
 
 			"resource_group_name": azure.SchemaResourceGroupNameForDataSource(),
diff --git a/azurerm/resource_arm_user_assigned_identity.go b/azurerm/resource_arm_user_assigned_identity.go
index d4355e20ccc4..6973e204e1a7 100644
--- a/azurerm/resource_arm_user_assigned_identity.go
+++ b/azurerm/resource_arm_user_assigned_identity.go
@@ -27,7 +27,7 @@ func resourceArmUserAssignedIdentity() *schema.Resource {
 				Type:         schema.TypeString,
 				Required:     true,
 				ForceNew:     true,
-				ValidateFunc: validation.StringLenBetween(1, 24),
+				ValidateFunc: validation.StringLenBetween(3, 128),
 			},
 
 			"resource_group_name": azure.SchemaResourceGroupName(),