# PAYCO

### 1. Configure PAYCO simple payment PG settings

Refer to the [**PAYCO settings**](/docs-en/ready/2.-pg/pg/undefined-3.md) page to configure the PG settings.

![](/files/EBe1BobTmuSuZ6tgUv2m)

### 2. Request payment

To open the payment window, call [JavaScript SDK](/docs-en/sdk/javascript-sdk.md) IMP.**request\_pay**(param, callback).

In PC browsers, <mark style="color:red;">**callback**</mark> is invoked after calling `IMP.request_pay(param, callback)`. In mobile browsers, the page is redirected to <mark style="color:red;">**m\_redirect\_url**</mark>.

{% tabs %}
{% tab title="General payment request" %}
{% code title="Javascript SDK" %}

```javascript
IMP.request_pay({
    pg : 'payco',
    merchant_uid: '{Merchant created Order ID}', //Example: order_no_0001
    name : 'Order name: Test payment',
    amount : 14000,
    buyer_email : 'iamport@siot.do',
    buyer_name : 'Customer name',
    buyer_tel : '010-1234-5678',
    buyer_addr : 'Samseong-dong, Gangnam-gu, Seoul',
    buyer_postcode : '123-456'
}, function(rsp) { // callback logic
	//* ...Omitted... *//
});
```

{% endcode %}

#### Key parameter description

**`pg`** <mark style="color:red;">**\***</mark>\*\* \*\*<mark style="color:green;">**string**</mark>

**PG code**

* If not specified and this is the only PG setting that exists, `default PG` is automatically set.
* If there are multiple PG settings, set to **`payco`**.

**`pay_method`** <mark style="color:green;">**string**</mark>

**Payment method code**

<details>

<summary>Payment method codes</summary>

* `card` (credit card)
* `trans`(instant account transfer)
* `vbank`(virtual account)

</details>

**`merchant_uid`** <mark style="color:red;">**\***</mark>\*\* \*\*<mark style="color:green;">**string**</mark>

**Order ID**

Must be unique for each request.

**`buyer_tel`**<mark style="color:red;">**`*`**</mark><mark style="color:green;">**`string`**</mark>

**Customer phone number**

<mark style="color:red;">Required</mark>

**`amount`** <mark style="color:red;">**\***</mark>\*\* \*\*<mark style="color:purple;">**integer**</mark>

**Payment amount**

Must be an integer (not string)

{% embed url="<https://codepen.io/chaiport/pen/PoQebLQ>" %}
PAYCO payment window example
{% endembed %}
{% endtab %}

{% tab title="Subscription payment request" %}
To open subscription payment window, specify the **customer\_uid** parameter.

{% hint style="info" %}
**amount**

* For display purpose only. No payment approval.
  {% endhint %}

{% code title="Javascript SDK" %}

```javascript
IMP.request_pay({
    pg : 'payco',
    merchant_uid : '{Merchant created Order ID}', // Example: issue_billingkey_monthly_0001
    name : 'Order name: Billing key request test',
    amount : 0, // For display purpose only 
    customer_uid : '{Unique ID for the card (billing key)}', // Required (Example: gildong_0001_1234)
    buyer_email: "johndoe@gmail.com",
    buyer_name: "John Doe",
    buyer_tel : '02-1234-1234'
}, function(rsp) {
    if ( rsp.success ) {
        alert('Success');
    } else {
        alert('Failed');
    }
});
```

{% endcode %}

#### Key parameter description

**`pg`** <mark style="color:red;">**\***</mark>\*\* \*\*<mark style="color:green;">**string**</mark>

**PG code**

* If not specified and this is the only PG setting that exists, `default PG` is automatically set.
* If there are multiple PG settings, set to **`payco`**.

**`customer_uid`** <mark style="color:red;">**\***</mark>\*\* \*\*<mark style="color:green;">**string**</mark>

**Credit card billing key**

Billing key to be mapped 1:1 with the user-entered credit card information.

**`amount`** <mark style="color:red;">**\***</mark>\*\* \*\*<mark style="color:purple;">**Integer**</mark>

**Payment amount**

For display purpose only. No payment approval.

#### Request payment with billing key (customer\_uid)

After successfully getting the billing key, the billing key is **stored on the i'mport server** mapped 1:1 with the specified `customer_uid`. For security reasons, the server cannot directly access the billing key. Subsequent payments can be requested by calling the [<mark style="color:blue;">**non-authenticated payment request REST API**</mark>](/docs-en/api/api/api.md) with the `customer_uid` as follows:

{% code title="sever-side" %}

```
curl -H "Content-Type: application/json" \   
     -X POST -d '{"customer_uid":"your-customer-unique-id", "merchant_uid":"order_id_8237352", "amount":3000}' \
     https://api.iamport.kr/subscribe/payments/again
```

{% endcode %}
{% endtab %}

{% tab title="Subscription payment API request" %}
**Not supported.**
{% endtab %}
{% endtabs %}


---

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