instance_size for advance cluster marked as optional in the documentation

[gregoirefra]

Terraform CLI and Terraform MongoDB Atlas Provider Version

Terraform v1.2.6
provider registry.terraform.io/mongodb/mongodbatlas v1.8.1

Terraform Configuration File

resource "mongodbatlas_advanced_cluster" "sandbox" {
  project_id   = var.project_id
  name         = "autoscaling"
  cluster_type = "REPLICASET"
  replication_specs {
    region_configs {
      electable_specs {
        node_count = 3
      }
      auto_scaling {
        disk_gb_enabled           = true
        compute_enabled           = true
        compute_min_instance_size = "M10"
        compute_max_instance_size = "M20"
      }
      provider_name = "AWS"
      priority      = 7
      region_name   = "US_EAST_1"
    }
  }

  provider = mongodbatlas.staging
}

Steps to Reproduce

Expected Behavior

Based on the documentation here the configuration should be valid and not expect an instance size.

Actual Behavior

Received an error message stating a missing required argument.

Terraform has been successfully initialized!
╷
│ Error: Missing required argument
│
│   on sandbox.tf line 7, in resource "mongodbatlas_advanced_cluster" "sandbox":
│    7:       electable_specs {
│
│ The argument "instance_size" is required, but no definition was found.
╵

Additional Context

Based on the code base I believe this is simply a documentation error unless we should be able to not specify the instance size when using auto-scaling.

[github-actions]

Thanks for opening this issue. The ticket INTMDB-926 was created for internal tracking.

[andreaangiolillo]

Hello 👋
Thanks for opening this issue. The fix will be available in the next release.

Thanks

[andreaangiolillo]

Hello,
The fix was released in v1.11.0.. Feel free to reopen the issue if you still have the same problem with the latest version.

Thanks