`awscc_cloudformation_stack_set`: Resource doesn't work with StackInstancesGroup attribute

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The resources and data sources in this provider are generated from the CloudFormation schema, so they can only support the actions that the underlying schema supports. For this reason submitted bugs should be limited to defects in the generation and runtime code of the provider. Customizing behavior of the resource, or noting a gap in behavior are not valid bugs and should be submitted as enhancements to AWS via the CloudFormation Open Coverage Roadmap.

Terraform CLI and Terraform AWS Cloud Control Provider Version

Terraform v1.7.3
on darwin_arm64
+ provider registry.terraform.io/hashicorp/awscc v0.71.0

Affected Resource(s)

awscc_cloudformation_stack_set

Terraform Configuration Files

resource "awscc_cloudformation_stack_set" "stackset" {
  stack_set_name   = "network-stackset"
  permission_model = "SERVICE_MANAGED"

  auto_deployment = {
    enabled                          = true
    retain_stacks_on_account_removal = false
  }

  stack_instances_group = [{
    deployment_targets = {
      organizational_unit_ids = ["ou-u7vc-ex6e8h34"]
    }
    regions = ["us-east-1"]
  }]

  template_body = jsonencode({
    Resources = {
      myVpc = {
        Type = "AWS::EC2::VPC"
        Properties = {
          CidrBlock = "10.0.0.0/16"
        }
      }
    }
  })
}

terraform {
  required_providers {
    awscc = {
      source  = "hashicorp/awscc"
      version = "0.71.0"
    }
  }
}

provider "awscc" {}

Debug Output

https://gist.github.com/ericofusco/8fc48b6da09f7e0ee5b1f146e2e015d1

Expected Behavior

State and attributes are stored accordingly based on the stacksets deployed.

Actual Behavior

╷
│ Error: Provider produced inconsistent result after apply
│
│ When applying changes to awscc_cloudformation_stack_set.stackset, provider "provider[\"registry.terraform.io/hashicorp/awscc\"]" produced an unexpected new value:
│ .stack_instances_group: was
│ cty.SetVal([]cty.Value{cty.ObjectVal(map[string]cty.Value{"deployment_targets":cty.ObjectVal(map[string]cty.Value{"account_filter_type":cty.UnknownVal(cty.String),
│ "accounts":cty.UnknownVal(cty.Set(cty.String)), "accounts_url":cty.UnknownVal(cty.String), "organizational_unit_ids":cty.SetVal([]cty.Value{cty.StringVal("ou-u7vc-ex6e8h34")})}),
│ "parameter_overrides":cty.UnknownVal(cty.Set(cty.Object(map[string]cty.Type{"parameter_key":cty.String, "parameter_value":cty.String}))),
│ "regions":cty.SetVal([]cty.Value{cty.StringVal("us-east-1")})})}), but now null.
│
│ This is a bug in the provider, which should be reported in the provider's own issue tracker.

Steps to Reproduce

terraform apply

hashicorp / terraform-provider-awscc

`awscc_cloudformation_stack_set`: Resource doesn't work with StackInstancesGroup attribute #1451

Community Note

Terraform CLI and Terraform AWS Cloud Control Provider Version

Affected Resource(s)

Terraform Configuration Files

Debug Output

Expected Behavior

Actual Behavior

Steps to Reproduce

References