Apply/remove discount codes

Use the applyDiscountToCart and removeDiscountFromCart mutations to apply or remove eligible discounts from a cart before finalizing a purchase. Marketplace Managers create and manage discounts. For more information on discounts, refer to the help.

Mutation:

mutation applyDiscountToCart($input: ApplyDiscountInput!){
    applyDiscountToCart(input: $input) {
        cart {
            id
            items {
                id
                product {
                    name
                }
                discounts {
                    id
	              code

                }
            }
            pricingTotal {
                amountDueAfterTax
                totalTaxAmount
            }
        }
    }
}

b. mutation removeDiscountFromCart($input: RemoveDiscountCodeInput!){
                 removeDiscountFromCart(input: $input){
                      cart {
            id
            items {
                id
                product {
                    name
                }
            }
            pricingTotal {
                amountDueAfterTax
                totalTaxAmount
            }
        }
    }
}

Sample arguments

{
   "input":{
        "cartId":  "95cce1ea-37fb-431d-9f5a-7df387b7e8e4",
        "discountCode": "FLAT_50_OFF"
    }
}

Sample output

{  "data": {
    "applyDiscountToCart": {
      "cart": {
        "id": "6512b7ff875fe104e5fde6da",
        "items": [
          {
            "id": "b7ec8290-d984-4608-bca6-f31191e61f05",
            "product": {
              "name": "Tag and Track device 1"
            },
				"discounts": [{
              "id": "33ec8290-d984-4608-bca3-f31191e61f12",
              "code": "FLAT_50_OFF   
            }]
                      },
          {
            "id": "5dc0fe86-b66c-450d-bd6b-9c4a5e19e061",
            "product": {
              "name": "Stacked Web App (DO NOT EDIT OR CHANGE)"
            },
            "discounts": []
          }
        ],
        "pricingTotal": {
          "amountDueAfterTax": 474.1,
          "totalTaxAmount": 34.1
        }
      }
    }
  }
}

Error handling:

The above mentioned mutations for discounts return errors if a request is made with invalid data or headers. For more information on errors and how to handle them, refer to. The applyDiscontToCart can result in an error of type InvalidDiscountCodeError, if an invalid discount is provided as input.

Example

Arguments:

		{
  "input": {
    "cartId": "6512b7ff875fe104e5fde6da",
    "discountCode": "RANDOM_DISCOUNT"
  }
}

Output:

{
  "data": {
    "applyDiscountToCart": {
      "cart": null,
      "userErrors": [
        {
          "__typename": "InvalidDiscountCodeError",
          "message": "Discount RANDOM_DISCOUNT does not exist or is expired.",
          "path": [
            "input",
            "discountCode"
          ]
        }
      ]
    }
  }
}