tfe_stack "github_app_installation_id" argument does not work

[jmalloc]

Terraform version

Terraform Cloud: ~> 1.10.0

Terraform Configuration Files

resource "tfe_stack" "this" {
  name        = "idp-eks"
  description = "..."
  project_id  = "<redacted>"

  vcs_repo {
    identifier                 = "<redacted>/idp-eks"
    branch                     = "main"
    github_app_installation_id = "ghain-<redacted>"
  }
}

Debug Output

�Terraform v1.10.4
on linux_amd64
Initializing plugins and modules...
{"@level":"info","@message":"Terraform 1.10.4","@module":"terraform.ui","@timestamp":"2025-01-09T23:27:53.099967Z","terraform":"1.10.4","type":"version","ui":"1.2"}
{"@level":"info","@message":"module.stack_eks.tfe_stack.this: Plan to create","@module":"terraform.ui","@timestamp":"2025-01-09T23:27:56.623036Z","change":{"resource":{"addr":"module.stack_eks.tfe_stack.this","module":"module.stack_eks","resource":"tfe_stack.this","implied_provider":"tfe","resource_type":"tfe_stack","resource_name":"this","resource_key":null},"action":"create"},"type":"planned_change"}
{"@level":"info","@message":"module.stack_eks.tfe_stack.this: Creating...","@module":"terraform.ui","@timestamp":"2025-01-09T23:27:57.359877Z","hook":{"resource":{"addr":"module.stack_eks.tfe_stack.this","module":"module.stack_eks","resource":"tfe_stack.this","implied_provider":"tfe","resource_type":"tfe_stack","resource_name":"this","resource_key":null},"action":"create"},"type":"apply_start"}
{"@level":"info","@message":"module.stack_eks.tfe_stack.this: Creation errored after 0s","@module":"terraform.ui","@timestamp":"2025-01-09T23:27:57.407648Z","hook":{"resource":{"addr":"module.stack_eks.tfe_stack.this","module":"module.stack_eks","resource":"tfe_stack.this","implied_provider":"tfe","resource_type":"tfe_stack","resource_name":"this","resource_key":null},"action":"create","elapsed_seconds":0},"type":"apply_errored"}
{"@level":"error","@message":"Error: Unable to create stack","@module":"terraform.ui","@timestamp":"2025-01-09T23:28:00.594849Z","diagnostic":{"severity":"error","summary":"Unable to create stack","detail":"unprocessable entity\n\nVCS connection requires either github app installation or oauth token","address":"module.stack_eks.tfe_stack.this","range":{"filename":"modules/stack/stack.tf","start":{"line":1,"column":29,"byte":28},"end":{"line":1,"column":30,"byte":29}},"snippet":{"context":"resource \"tfe_stack\" \"this\"","code":"resource \"tfe_stack\" \"this\" {","start_line":1,"highlight_start_offset":28,"highlight_end_offset":29,"values":[]}},"type":"diagnostic"}
Operation failed: failed running terraform apply (exit 1)

Expected Behavior

Expected creation of a Stack with VCS configured to use the existing GitHub app integration.

Actual Behavior

Resource creation fails with the error message:

Error: Unable to create stack
unprocessable entity
VCS connection requires either github app installation or oauth token

Additional Context

This GitHub app integration is already configured and works for existing workspaces, as well as stacks created manually through the API.

I have tried using both the GitHub app installation ID (the numeric one), and the "Hashicorp-side" identifier that begins with "ghain-". As an aside, the latter is quite difficult to find, and I was only clued into the fact that it may be the correct identifier to use after manually creating a stack and querying it using the HCP API.

I also tried creating the stack manually then importing it into the configuration, which results in a different message when attempting to update the tfe_stack resource:

Error: Unable to update stack
invalid attribute
Cannot connect to VCS. Update the stack's VCS settings before continuing.