Nested objects in JSON response - json

Question

I am defining my swagger file as below:
{
"swagger": "2.0",
"info": {
"title": "PSD2 Account API Specification",
"description": "PSD2 Account Swagger API Specification",
"version": "1.0.0"
},
"schemes": [
"https"
],
"consumes": [
"application/json"
],
"produces": [
"application/json"
],
"securityDefinitions": {
"basicAuth": {
"type": "basic"
}
},
"security": [
{
"basicAuth": []
}
],
"paths": {
"/accounts/{id}/transactionhistory": {
"get": {
"tags": [
"Accounts"
],
"summary": "Get transaction history",
"operationId": "GetTransactionHistory",
"produces": [
"application/json"
],
"parameters": [
{
"name": "id",
"in": "path",
"required": true,
"type": "string"
},
{
"name": "fromDate",
"in": "query",
"required": false,
"type": "string"
},
{
"name": "toDate",
"in": "query",
"required": false,
"type": "string",
"format": "date"
},
{
"name": "sumOrDetail",
"in": "query",
"required": false,
"type": "string"
},
{
"name": "noOfEntries",
"in": "query",
"required": false,
"type": "string"
},
{
"name": "toTime",
"in": "query",
"required": false,
"type": "string"
}
],
"responses": {
"200": {
"$ref": "#/definitions/200TransactionHistory"
}
}
}
}
},
"definitions": {
"200TransactionHistory": {
"type": "object",
"properties": {
"amount": {
"type": "string",
"maxLength": 25
},
"txnCodeDesc": {
"type": "string"
},
"accountDesc": {
"type": "string"
},
"txnCurrency": {
"type": "string",
"maxLength": 3
},
"accountIBAN": {
"type": "string"
},
"valueDate": {
"type": "string",
"format": "date"
},
"transactionCode": {
"type": "object",
"properties": {
"code": {
"type": "string",
"maxLength": 3
},
"subcode": {
"type": "string",
"maxLength": 3
}
}
},
"executionEndTime": {
"type": "string"
},
"stmtEntryId": {
"type": "string",
"maxLength": 90
},
"accountId": {
"type": "string"
},
"transReference": {
"type": "string",
"maxLength": 60
},
"exchangeRate": {
"type": "string",
"maxLength": 11
},
"remittanceInformation": {
"type": "string",
"maxLength": 65
},
"payeeCustomer": {
"type": "string"
},
"closeBalance": {
"type": "string"
},
"bookingDate": {
"type": "string",
"format": "date"
},
"currency": {
"type": "string",
"maxLength": 3
},
"id": {
"type": "string"
},
"txnCurrencyAmount": {
"type": "string",
"maxLength": 25
},
"payeeAccount": {
"type": "string"
},
"openBalance": {
"type": "string"
}
}
}
}
}
There is a simple GET request and I want in the response to have the following format:
"transactionCode": {
"code": "thisIsTheCode",
"SubsubCode": "thisIsTheSubCode"
}
As you can see in the response definition this is how I nest my objects:
"transactionCode": {
"type": "object",
"properties": {
"code": {
"type": "string",
"maxLength": 3
},
"subcode": {
"type": "string",
"maxLength": 3
}
}
}
When I am testing my request from Postman, I am getting the following error message:
com.fasterxml.jackson.core.JsonParseException: Unexpected character ('}' (code 125)): expected a valid value (number, String, array, object, 'true', 'false' or 'null')
at [Source: {"header":{"audit":{"T24_time":107,"parse_time":0},"page_start":0,"page_token":"5fc34084-2496-41f0-a968-084b3b519c88","total_size":0,"page_size":50},"body":}; line: 1, column: 158]
Can anyone tell what I am doing wrong? Is this something wrong in the way I am nesting the objects in the response?