Error with creating application gateway

Terraform Providers Azure
1

Hey

I was tried to create Application gateway via terraform, use this module:

main.tf of the resource module:

resource "azurerm_application_gateway" "application_gateway" {
  for_each            = var.appgw_list
  name                = "agw-${each.value.application}-${each.value.env}-${each.value.region}-${each.value.index}"
  resource_group_name = each.value.rg_name
  location            = var.location
  tags                = each.value.tags
  zones               = each.value.zones
  autoscale_configuration {
    min_capacity = 2
    max_capacity = 10
  }

  ssl_certificate {
    name                = each.value.ssl_cert_name
    key_vault_secret_id = each.value.key_vault_secret_id
  }

  identity {
...
  }

  sku {
...
  }

  gateway_ip_configuration {
...
  }

  dynamic "frontend_port" {
    for_each = each.value.frontend_port
    content {
      name = frontend_port.key
      port = frontend_port.value
    }
  }

  frontend_ip_configuration {
...
  }

  backend_address_pool {
    fqdns        = each.value.backend_fqdns
    name         = each.value.backend_name
    ip_addresses = each.value.backend_address
  }

  backend_http_settings {
    name                  = each.value.backend_http_settings_name
    affinity_cookie_name  = each.value.affinity_cookie_name
    cookie_based_affinity = "Disabled"
    port                  = each.value.backend_http_settings_port
    protocol              = each.value.backend_http_settings_protocol
    host_name             = each.value.backend_host_name_override?each.value.backend_http_settings_host_name:"" //override the front host name
    request_timeout       = "50"
    probe_name            = each.value.backend_http_settings_probe_name
  }

  ssl_policy {
...
  }

  http_listener {
    name                           = each.value.http_listener_name
    frontend_ip_configuration_name = each.value.frontend_ip_configuration_name
    frontend_port_name             = each.value.frontend_port_name
    protocol                       = "Https"
    host_name                      = each.value.http_listener_host_name
    ssl_certificate_name           = each.value.ssl_cert_name
    require_sni                    = true
  }

  request_routing_rule {
    name                       = each.value.request_routing_rule_name
    rule_type                  = "Basic"
    http_listener_name         = each.value.http_listener_name
    backend_address_pool_name  = each.value.backend_name
    backend_http_settings_name = each.value.backend_http_settings_name
    priority                   = 10
  }
  probe {
...
        }

}

The resource in terraform.tfvars: (certain details have been censored)

appgw_list = {
  "resource-name" = {
    application                    = "child"
    env                            = "dev"
    region                         = "westeu"
    rg_name                        = "rg-child-dev-westeu-001"
    index                          = "001"
    identityName                   = "id-001"
    subnet_name                    = "snet-agw"
    ssl_cert_name                  = "childcert"
    key_vault_name                 = "kv-001"
    key_vault_secret_id            = "xxxx-xxxx-xxxx-xxxxx-xxxxx-xxxxx"
    gateway_ip_configuration_name  = "agw-ip"
    frontend_port_name             = "port_443"
    frontend_port                  = [443]
    frontend_ip_configuration_name = "pip-child-002"
    backend_http_settings_name      = "child-setting"
    backend_fqdns                   = ["apim-child.net"]
    backend_http_settings_port      = "443"
    backend_http_settings_protocol  = "Https"
    backend_http_settings_host_name = "childwizaed.code.co.il"
    # backend_http_settings_probe_name = ""
    backend_name            = "apim_backend"
    backend_address         = ["20.201.60.232"]
    http_listener_name      = "childlistener"
    http_listener_host_name = "childwizaed.code.co.il"
    # ssl_certificate_name             = ""
    backend_host_name_override                      = false
    affinity_cookie_name                            = "Application"
    request_routing_rule_name                       = "child-rule"
    backend_http_settings_probe_name                = "apim-probe"
    probe_host                                      = "apim-child.net"
    probe_interval                                  = 30
    probe_minimum_servers                           = 0
    probe_name                                      = "child-setting"
    probe_path                                      = "zzzz-zzz-zzzz-zzzz"
    probe_pick_host_name_from_backend_http_settings = false
    probe_protocol                                  = "Https"
    probe_timeout                                   = 30
    probe_unhealthy_threshold                       = 3
    zones                                           = []
    capacity                                        = 0
  }

}

And this is the error:

Error: updating Application Gateway: (Name "resource-name" / Resource Group "rg-child-dev-westeu-001"): network.ApplicationGatewaysClient#CreateOrUpdate: Failure sending request: StatusCode=400 -- Original Error: Code="InvalidResourceReference" Message="xxx/xxx/xxx/xxx/xxx/xxx/frontendPorts/port_443 referenced by resource xxx/xxx/xxx/xxx/xxx/xxxx/xxx/httpListeners/childlistener was not found. Please make sure that the referenced resource exists, and that both resources are in the same region." Details=[]

Any ideas?

Thanks!