> For the complete documentation index, see [llms.txt](https://docs.ottpay.com/payment-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ottpay.com/payment-api/api-for-mobile-browser-with-wechat/query-transaction-api.md).
# Query Transaction API
## :white\_check\_mark: **Query Transaction API**
:ballot\_box\_with\_check: **Request Message Parameters**
| Params Name | Description | Required | Notes |
|---|
| Params Name | Description | Required | Notes |
| action | Response code | Y | STATUS_QUERY |
| version | Response message | Y | 1.0 |
| merchant_id | Merchant ID | Y | |
| data | order_id | Order ID | Y |
| md5 | Message digest | Y | |
:ballot\_box\_with\_check: **Request Example(JSON Data):**
```
{
"action":"STATUS_QUERY",
"version":"1.0",
"merchant_id":"QC00005496",
"data": "zTadPG0YM4gD1WOFqxg7wn3vmU20NjCnCUOOnE9mTTkxYraQDflljA8W3azYG9MuOvOyl3cZhafH+io6PiWdZCwRmi3HGa19BvT215IIxRy2HvYe0Sqs2lxshm9E4y5F1gJ7HHMTqpY0wIA4DsuWA97UC55adB2G86VbanI7B5a3kErApr5mbAoE7wcNbDJfGh4CBbSoRxQyiGZ48SvYuIW/sclT4yu6okjo6CY3xL4=",
"md5":"6AFB2E94A70D9A208F101723700EB287"
}
```
#### :ballot\_box\_with\_check: Data**(JSON Data, to be encrypted):**
| Params Name | Description | Required | Notes |
|---|
| Params Name | Description | Required | Notes |
| order_id | Order ID | Y | |
:ballot\_box\_with\_check: **Response Message Parameters**
| **Params Name** | **Description** | **Required** | **Notes** |
| --------------- | ---------------- | ------------ | -------------------------- |
| rsp\_code | Response code | Y | Please refer to Appendix B |
| rsp\_msg | Response message | Y | |
| data | order\_status | Order status | Y |
| md5 | Message digest | Y | |
#### :ballot\_box\_with\_check: Data**(JSON Data, to be encrypted):**
| **Params Name** | **Description** | **Required** | **Notes** |
| ---------------- | ------------------------ | ------------ | ------------------------------- |
| order\_status | Order status | Y | |
| trade\_time | Transaction time | N | |
| order\_id | Order ID | N | |
| buyer\_login\_id | Buyer ID | N | |
| total\_amount | Order total amount | N | |
| receive\_amount | Merchant receives amount | N | |
| pay\_amount | Users pay amount | N | |
| refund\_fee | Refund fee | N | Only exist for a refunded order |
---
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