{
  "$schema": "http://json-schema.org/draft-04/schema",
  "title": "Transfer",
  "description": "A ledger-local transfer of funds",
  "type": "object",
  "allOf": [
    { "$ref": "TransferTemplate.json" }
  ],
  "not": {
    "required": ["expiry_duration"]
  },
  "required": ["debits", "credits"]
}