How can i apply Coupon code in magento2 using REST API

[pratap_penmetsa]

How can i apply Coupon code in magento2 using REST API. which order should i call the rest apis in order to get totals after applying coupon codes.

[Manish Mittal · Accepted solution]

Hello @pratap_penmetsa

If you are not aware with API's Kindly refer to Swagger from Magento2
http://devdocs.magento.com/swagger/#/

Here you can find
quoteCouponManagementV1
Coupon management service interface.
PUT /V1/carts/{cartId}/coupons/{couponCode}

You can use this API once your quote is ready you can apply after that.

[sarita_furtado]

Hi @Manish Mittal 

I am using the same PUT /V1/carts/{cartId}/coupons/{couponCode} Api to apply coupon for a cart. But I am getting below error.

{
   "message": "No such entity with %fieldName = %fieldValue",
   "parameters": {
      "fieldName": "cartId",
      "fieldValue": 2
   }
}

As mentioned by you, I should be using this api only once the quote is ready. How can I check or which API response will show me that the quote is ready?

[sarita_furtado]

@Manish Mittal Any update on this?

---

@sarita_furtado wrote:

Hi @Manish Mittal 

I am using the same PUT /V1/carts/{cartId}/coupons/{couponCode} Api to apply coupon for a cart. But I am getting below error.

{
   "message": "No such entity with %fieldName = %fieldValue",
   "parameters": {
      "fieldName": "cartId",
      "fieldValue": 2
   }
}

As mentioned by you, I should be using this api only once the quote is ready. How can I check or which API response will show me that the quote is ready?

---

[amee panchal]

Hello @pratap_penmetsa 

The Magento 2 REST API identifies various functions which can be used to perform requests and receive responses. A developer can perform these interactions by using the HTTP protocol.

1. First of all, you need to create a new cart price rule and set it up in Marketing > Promotions > Cart Price Rules.
2. Then open the Rule Information section and choose Specific Coupon in the Coupon dropdown.
3. Enter the needed value in the field Coupon Code.

[nishaelsnec40f]

To apply Coupon code in Magento 2, Firstly you will have to set up a new cart price rule that is used to count the discount. 

- Create the new cart price rule and set it up in Marketing > Promotions > Cart Price Rules. 

- Open the Rule Information and select the particular Coupon.

- Enter the value in Coupon Code.

- Specify how much time the coupon can be used.

- Configure the rest of the Cart Price Rule and save all the changes that you have made.