Fix the unused region variable

Author: Veetaha

asset-account/terraform/stack-set/README.md

@@ -65,8 +65,8 @@ No modules.
 | <a name="input_managed_execution"></a> [managed_execution](#input_managed_execution)                         | [See docs here](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/cloudformation_stack_set#managed_execution-1)                                                                                                                                                                                                                                                                    | <pre>object({<br/> active = optional(bool)<br/> })</pre>                                                                                                                                                                                                                                                                                                                                                      | `null`                                                                                                                                                                                                                                                     |    no    |
 | <a name="input_operation_preferences"></a> [operation_preferences](#input_operation_preferences)             | [See docs here](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/cloudformation_stack_instances#operation_preferences)                                                                                                                                                                                                                                                            | <pre>object({<br/> concurrency_mode = optional(string)<br/> failure_tolerance_count = optional(number)<br/> failure_tolerance_percentage = optional(number)<br/> max_concurrent_count = optional(number)<br/> max_concurrent_percentage = optional(number)<br/><br/> # Region settings are not supported, because<br/> # there must be at most one stack per account<br/> # in a single region.<br/> })</pre> | `null`                                                                                                                                                                                                                                                     |    no    |
 | <a name="input_permission_model"></a> [permission_model](#input_permission_model)                            | [See docs here](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/cloudformation_stack_set#permission_model-1)                                                                                                                                                                                                                                                                     | `string`                                                                                                                                                                                                                                                                                                                                                                                                      | `null`                                                                                                                                                                                                                                                     |    no    |
-| <a name="input_region"></a> [region](#input_region)                                                          | The AWS region where the Elastio Asset Account stack instances will be deployed.<br/>It is just a single region because this stack is deployed only once per AWS account.                                                                                                                                                                                                                                    | `string`                                                                                                                                                                                                                                                                                                                                                                                                      | `"us-east-1"`                                                                                                                                                                                                                                              |    no    |
 | <a name="input_retain_stacks"></a> [retain_stacks](#input_retain_stacks)                                     | [See docs here](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/cloudformation_stack_instances#retain_stacks-1)                                                                                                                                                                                                                                                                  | `bool`                                                                                                                                                                                                                                                                                                                                                                                                        | `null`                                                                                                                                                                                                                                                     |    no    |
+| <a name="input_stack_instances_region"></a> [stack_instances_region](#input_stack_instances_region)          | The AWS region where the Elastio Asset Account stack instances will be deployed.<br/>It is just a single region because this stack is deployed only once per AWS account.                                                                                                                                                                                                                                    | `string`                                                                                                                                                                                                                                                                                                                                                                                                      | `"us-east-1"`                                                                                                                                                                                                                                              |    no    |
 | <a name="input_stack_set_description"></a> [stack_set_description](#input_stack_set_description)             | The description of the CloudFormation StackSet.                                                                                                                                                                                                                                                                                                                                                              | `string`                                                                                                                                                                                                                                                                                                                                                                                                      | `"Elastio Asset Account StackSet creates IAM roles to link the AWS accounts with\nthe Elastio Connector. This allows the Elastio Connector to scan the assets\navailable in the account where the Elastio Asset Account stack instances are\ndeployed.\n"` |    no    |
 | <a name="input_stack_set_name"></a> [stack_set_name](#input_stack_set_name)                                  | The name of the CloudFormation StackSet.                                                                                                                                                                                                                                                                                                                                                                     | `string`                                                                                                                                                                                                                                                                                                                                                                                                      | `"ElastioAssetAccount"`                                                                                                                                                                                                                                    |    no    |
 | <a name="input_tags"></a> [tags](#input_tags)                                                                | Additional tags to apply to all resources created by this stack.                                                                                                                                                                                                                                                                                                                                             | `map(string)`                                                                                                                                                                                                                                                                                                                                                                                                 | `{}`                                                                                                                                                                                                                                                       |    no    |

asset-account/terraform/stack-set/main.tf

@@ -61,6 +61,7 @@ resource "aws_cloudformation_stack_instances" "this" {
   stack_set_name = aws_cloudformation_stack_set.this.name
 
   accounts = var.accounts
+  regions  = [var.stack_instances_region]
 
   dynamic "deployment_targets" {
     for_each = var.deployment_targets[*]

asset-account/terraform/stack-set/variables.tf

@@ -51,7 +51,7 @@ variable "deployment_targets" {
 ## Optional parameters ##
 #########################
 
-variable "region" {
+variable "stack_instances_region" {
   description = <<-DESCR
     The AWS region where the Elastio Asset Account stack instances will be deployed.
     It is just a single region because this stack is deployed only once per AWS account.