> For the complete documentation index, see [llms.txt](https://piqpay.gitbook.io/merchant-integration/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://piqpay.gitbook.io/merchant-integration/other-api-requests/order-adjustment.md).

# Order adjustment

You can send an API POST request to change order details if a client has transferred an incorrect amount (more or less than specified in the order), transferred funds to an incorrect bank account, or transferred funds to a different bank. Using this API request, you can also attach a receipt to the order.

**Request field descriptions**

**requisites** (array) - the changed payment details the client transferred to:

instruction - PHONE or CARD\_NUMBER,

value - the changed payment details themselves;

if the payment details have not changed, enter null in the field;

**amount** (object) - the changed amount the client transferred:

minorAmount - the changed amount,

currency - the transfer currency;

if the amount has not changed, enter null in the field;

**receipt** (object) - receipt details:

data - receipt in base64 format,

contentType - application/pdf or image/jpg,

name - receipt file name.

\
**Example request to change order details**

{% code overflow="wrap" %}

```json
POST https://eha.piqpay.codes/v1/orders/<order_id>/adjust
Authorization: Bearer ${secretKey}

{
    "requisites": null,
    "amount": {
        "minorAmount": 50000,
        "currency": "BDT"
    },
    "receipt": {
        "data":"MTIz",
        "contentType":"image/jpg",
        "name":"receipt"
    }
}
```

{% endcode %}


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