# Query DR

### Structure of QueryDR Request

<mark style="color:blue;"><https://neopay-domain?\\[key1=value]&\\[key2=value]&>...</mark> (below table is the description of key and value, no ordering required)

### Table of Parameter

<table><thead><tr><th>Parameter</th><th width="117">Data type</th><th width="101">Required</th><th>Description</th></tr></thead><tbody><tr><td>neo_MerchantCode</td><td>String</td><td>Y</td><td>The merchant code is provided by NeoX</td></tr><tr><td>neo_Version</td><td>String</td><td>Y</td><td>Version of API, "1" as default</td></tr><tr><td>neo_Command</td><td>String</td><td>Y</td><td>“QUERY_DR” as default</td></tr><tr><td>neo_MerchantTxnID</td><td>String</td><td>Y</td><td>Unique - The merchant transaction ID is provided by merchant</td></tr><tr><td>neo_SecureHash</td><td>String</td><td>Y</td><td>Use <strong>SHA256</strong> to hash the above parameters (sort the key by Alphabet order) + Secret Key (is provided by NeoX after actual integrating)</td></tr></tbody></table>

### Table of Data Response

<table><thead><tr><th width="200">Parameter</th><th width="117">Data type</th><th>Description</th></tr></thead><tbody><tr><td>neo_DRExists</td><td>String</td><td>Indicate that transaction exists or not. <br>- Y: transaction existed <br>- N: transaction is not exists</td></tr><tr><td>neo_ResponseCode</td><td>Number</td><td>Result of transaction: <br> 0: transaction success <br> != 0: transaction failed, refer to <a href="/pages/kU24dUIxUPVgYJPLKotj#table-of-error-code">table of error code</a></td></tr><tr><td>neo_ResponseMsg</td><td>String</td><td>Error description.</td></tr><tr><td>neo_MerchantCode</td><td>String</td><td>The merchant code is  provided by NeoX.</td></tr><tr><td>neo_Currency</td><td>String</td><td>Transaction currency, default is “VND”</td></tr><tr><td>neo_Locale</td><td>String</td><td>The language will use on payment page, support: “vi”, “en".</td></tr><tr><td>neo_Version</td><td>String</td><td>Payment gateway version, “1” as default</td></tr><tr><td>neo_Command</td><td>String</td><td>"PAY" as default.</td></tr><tr><td>neo_Amount</td><td>Number</td><td>Order amount.</td></tr><tr><td>neo_MerchantTxnID</td><td>String</td><td>Transaction ID is provided by merchant, it must be unique on merchant’s system and on each request, accept only characters, numerics and list of symbols: “-”, “_”.</td></tr><tr><td>neo_OrderID</td><td>String</td><td>Order ID of the transaction, only accept  characters, numerics and list of symbols: “-”, “_”.</td></tr><tr><td>neo_OrderInfo</td><td>String</td><td>Order information, max length 256</td></tr><tr><td>neo_TransactionID</td><td>String</td><td>Unique - Transaction ID is generated by NeoX.</td></tr><tr><td>neo_TransAmount</td><td>number</td><td>Transaction amount (partial payment).</td></tr><tr><td>neo_ExtData</td><td>Object</td><td>Extra data of transaction.</td></tr></tbody></table>

*Note: Should call this API 5 mins after payment made.*


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.neox.vn/docs/global/payment-gateway/transaction-management/query-dr.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.