can't create azurerm_function_app_function in python with programming model v2

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Terraform Version

1.6.6

AzureRM Provider Version

3.97.1

Affected Resource(s)/Data Source(s)

azurerm_function_app_function

Terraform Configuration Files

resource azurerm_linux_function_app "events_func_app" {
  name                       = "events-fun-app"
  resource_group_name        = var.general.resource_group_name
  location                   = var.region

  service_plan_id            = var.app_device_events_plan_id

  storage_account_name       = var.storage_account_device_events_name
  storage_account_access_key = var.storage_account_device_events_primary_access_key

  app_settings = {
    SERVICE_BUS_CONNECTION   = var.service_bus_primary_connection
    APPINSIGHTS_INSTRUMENTATIONKEY = var.app_insights_instrumentation_key
  }

  site_config {

    application_stack {
      python_version = "3.10"
    }
  }
}

resource "azurerm_function_app_function" "ota_updates_function" {
  name            = "${var.general.prefix}-${var.general.region.main}-ota-upd-func"
  function_app_id = azurerm_linux_function_app.events_func_app.id
  language        = "Python"

  config_json = jsonencode({
    "bindings" = [
      {
        "direction" = "in",
        "name" = "sbTrigger",
        "type" = "serviceBusTrigger",
        "queueName": var.ota_events_queue_name,
        "connection": "SERVICE_BUS_CONNECTION",
        "accessRights": "manage"
      }
    ]
  })

}

resource "azurerm_function_app_function" "dev_events_function" {
  name            = "dev_events-func"
  function_app_id = azurerm_linux_function_app.events_func_app.id
  language        = "Python"

  config_json = jsonencode({
    "bindings" = [
      {
        "type": "eventGridTrigger",
        "name": "event",
        "direction": "in"
      }
    ]
  })

}

Debug Output/Panic Output

creating Function (Subscription: "xxxxxxxxxxxxxxxxxxxxxxx"
│ Resource Group Name: "xxx-test"
│ Site Name: "xxx-test-westeurope-events-fun-app"
│ Function Name: "faber-test-westeurope-dev_events-func"): performing CreateFunction: unexpected status 400 (400 Bad Request) with response: {"Code":"BadRequest","Message":"Encountered an error (InternalServerError) from host
│ runtime.","Target":null,"Details":[{"Message":"Encountered an error (InternalServerError) from host runtime."},{"Code":"BadRequest"},{"ErrorEntity":{"Code":"BadRequest","Message":"Encountered an error (InternalServerError) from
│ host runtime."}}],"Innererror":null}

Expected Behaviour

If the function of type Event Grid Trigger, will be created as second (not for first) i've a BadRequestError.

Expected behaviour is that the app function App dev_events_function (python v1 programming model) will be created. So i tried to create this app using python programming model v2 (that don't require function.json configuration file, but use python decorators), but is now currently impossible because on terraform , the config_json is a REQUIRED param (but in v2 isn't required).

Actual Behaviour

azurerm_function_app_function resource of type Python (programming model v2) is impossible to create.
azurerm_function_app_function resource of type Python (programming model v1) using Event Grid Trigger is impossible to create if created as second app function.

Steps to Reproduce

terraform apply

Important Factoids

No response

References

No response

hashicorp / terraform-provider-azurerm