Logstash PATCH behavior

Attempt1.conf

input {
  # ...
}
output {
  elasticsearch {
    index => "transactions"
    document_id => "%{id}"
    action => update
    hosts => "es"
  }
} 

Transaction.json

{
  "merchant": {
    "name": "Super shop",
    "url": "https://shop.example.com"
  },
  "user": {
    "first_name": "Joe",
    "last_name": "Philips"
  },
  "order": {
    "description": "New TV",
    "amount": 150,
    "currency": "USD"
  },
  "transaction": {
    "status": "success",
    "completed_at": "2019-02-17T17:46:11.557"
  }
}