EventGrid Topic Queue Event Subscription Creation fails "Error: ID contained more segments than required:"

[mluker]

When creating an event subscription with a storage queue as an endpoint within an event grid topic the resources are created as expected but an error is thrown and the event subscription in the state file becomes tainted and you can no longer run a plan or apply.

Terraform Version

Terraform v0.12.24
+ provider.azuread v0.9.0
+ provider.azurerm v2.10.0
+ provider.random v2.2.1

Terraform Code

resource "azurerm_resource_group" "default" {
  name     = "tf-testing"
  location = "West US 2"
}

resource "azurerm_eventgrid_topic" "default" {
  location            = "West US 2"
  name                = "default-topic"
  resource_group_name = azurerm_resource_group.default.name
}

resource "azurerm_storage_account" "default" {
  name                     = "defaultstoragefoo"
  resource_group_name      = azurerm_resource_group.default.name
  location                 = azurerm_resource_group.default.location
  account_tier             = "Standard"
  account_replication_type = "LRS"

}

resource "azurerm_storage_queue" "default" {
  name                 = "defaultstoragequeue"
  storage_account_name = azurerm_storage_account.default.name
}

resource "azurerm_eventgrid_event_subscription" "default" {
  name  = "defaultEventSubscription"
  scope = azurerm_eventgrid_topic.default.id

  storage_queue_endpoint {
    storage_account_id = azurerm_storage_account.default.id
    queue_name         = azurerm_storage_queue.default.name
  }
}

Terraform Output

module.event-topics.azurerm_storage_account.default: Creating...
module.event-topics.azurerm_storage_account.default: Still creating... [10s elapsed]
module.event-topics.azurerm_storage_account.default: Still creating... [20s elapsed]
module.event-topics.azurerm_storage_account.default: Creation complete after 25s [id=/subscriptions/***/resourceGroups/tf-testing/providers/Microsoft.Storage/storageAccounts/defaultstoragefoo]
module.event-topics.azurerm_storage_queue.default: Creating...
module.event-topics.azurerm_storage_queue.default: Creation complete after 1s [id=https://defaultstoragefoo.queue.core.windows.net/defaultstoragequeue]
module.event-topics.azurerm_eventgrid_event_subscription.default: Creating...
module.event-topics.azurerm_eventgrid_event_subscription.default: Still creating... [10s elapsed]
module.event-topics.azurerm_eventgrid_event_subscription.default: Still creating... [20s elapsed]
module.event-topics.azurerm_eventgrid_event_subscription.default: Still creating... [30s elapsed]
module.event-topics.azurerm_eventgrid_event_subscription.default: Still creating... [40s elapsed]
module.event-topics.azurerm_eventgrid_event_subscription.default: Still creating... [50s elapsed]
module.event-topics.azurerm_eventgrid_event_subscription.default: Still creating... [1m0s elapsed]

Error: ID contained more segments than required: "/subscriptions/***/resourceGroups/tf-testing/providers/Microsoft.EventGrid/topics/default-topic/providers/Microsoft.EventGrid/eventSubscriptions/defaultEventSubscription"

  on ../../modules/project/event-topics/main.tf line 159, in resource "azurerm_eventgrid_event_subscription" "default":
 159: resource "azurerm_eventgrid_event_subscription" "default" {

Expected Behavior

resources are created with no errors and the state is not tainted and a subsequent plan can be run.

Actual Behavior

When creating an event subscription with a storage queue as an endpoint within an event grid topic the resources are created as expected but an error is thrown and the event subscription in the state file becomes tainted and you can no longer run a plan or apply.

Steps to Reproduce

1. terraform init
2. terraform apply

ADDITIONAL INFO (TAINTED STATE)

{
      "module": "module.event-topics",
      "mode": "managed",
      "type": "azurerm_eventgrid_event_subscription",
      "name": "default",
      "provider": "provider.azurerm",
      "instances": [
        {
          "status": "tainted",
          "schema_version": 0,
          "attributes": {
            "event_delivery_schema": "EventGridSchema",
            "eventhub_endpoint": [],
            "hybrid_connection_endpoint": [],
            "id": "/subscriptions/***/resourceGroups/tf-testing/providers/Microsoft.EventGrid/topics/default-topic/providers/Microsoft.EventGrid/eventSubscriptions/defaultEventSubscription",
            "included_event_types": null,
            "labels": null,
            "name": "defaultEventSubscription",
            "retry_policy": null,
            "scope": "/subscriptions/***/resourceGroups/tf-testing/providers/Microsoft.EventGrid/topics/default-topic",
            "storage_blob_dead_letter_destination": [],
            "storage_queue_endpoint": [
              {
                "queue_name": "defaultstoragequeue",
                "storage_account_id": "/subscriptions/***/resourceGroups/tf-testing/providers/Microsoft.Storage/storageAccounts/defaultstoragefoo"
              }
            ],
            "subject_filter": [],
            "timeouts": null,
            "topic_name": null,
            "webhook_endpoint": []
          },
          "private": "***",
          "dependencies": [
            "module.event-topics.azurerm_eventgrid_topic.default",
            "module.event-topics.azurerm_resource_group.default",
            "module.event-topics.azurerm_storage_account.default",
            "module.event-topics.azurerm_storage_queue.default"
          ]
        }
      ]
    }

[ghost]

This issue has been automatically migrated to hashicorp/terraform-provider-azurerm#6991 because it looks like an issue with that provider. If you believe this is not an issue with the provider, please reply to hashicorp/terraform-provider-azurerm#6991.

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.