I’m trying to create a Datadog synthetics resource using terraform. The resource is created by invoking a module.

module "app_synthetics" {
  source = "path/to/module/"
  .....
} 

The output is defined in the module as follows.

resource "datadog_synthetics_test" "default" {  
   ....resource definition....  
} 


output "monitor_id" {
  value = datadog_synthetics_test.default.monitor_id
}

I want to take this output and use it in another resource. I have defined the output as follows and passed the output as a variable to the other module from which a new resource is created.

output "app_monitor_id" {
  value = module.app_synthetics.monitor_id
}

module "other_module" {
  source = "./other/module/path"
  app_monitor_id = var.app_monitor_id
}

I have also defined the variable for this output. But I get the following error.

`╷
│ Error: Unsupported attribute
│
│   on outputs.tf line 3, in output "app_monitor_id":
│    3:   value = module.app_synthetics.monitor_id
│     ├────────────────
│     │ module.app_synthetics is object with 4 attributes
│
│ This object does not have an attribute named "monitor_id".`

What could be the reason for this error. Any help is appreciated. Thanks!