Update cart

The Update Cart request will replace the current cart. If you update the Cart while the Checkout is visible, use the Checkout Client API's to invoke suspend before your operation and resume afterward.

Please note

Please note that this operation cannot be performed if the purchase is completed.

While the checkout is suspended, the cart can be updated by calling the Checkout API from your backend as demonstrated in the following code:

Update cart request

Request

PUT /checkouts/1eec44b5-66d3-4058-a31f-3444229fb727/cart HTTP/1.1
Host: api.uat.walleydev.com // (Please note! Different hostname in production)
Authorization: Bearer bXlVc2VybmFtZTpmN2E1ODA4MGQzZTk0M2VmNWYyMTZlMDE...
Content-Type: application/json

[
    {
      "id": "2",
      "description": "Another product",
      "unitPrice": 123.45,
      "unitWeight": 1.2,
      "quantity": 1,
      "vat": 20,
      "requiresElectronicId": true,
      "sku": "a unique alphanumeric code for article identification"
    }
]

Response

{
  "id": "f5f4e86d-95b1-4c1a-8ad0-1d5907236bd7",
  "data": null,
  "error": null
}

Error

/*
 Example error. More errors available below.
*/
{
  "id": "862336bb-86a5-418b-b6ff-5547398d5c6b",
  "data": null,
  "error": {
    "code": 423,
    "message": "The resource requested is currently locked for modification. Try again.",
    "errors": [
      {
        "reason": "Resource_Locked",
        "message": "The resource requested is currently locked for modification. Try again."
      }
    ]
  }
}

Request Properties

Request headers

Header	Required	Explanation
Authorization	Yes	Instructions on how to generate the authorization header value can be found here.

Request properties

Property	Required	Explanation
id	Yes	The article id or equivalent. Max 50 characters. Values are trimmed from leading and trailing white-spaces. Shown on the invoice or receipt.
description	Yes	Descriptions longer than 50 characters will be truncated. Values are trimmed from leading and trailing white-spaces. Shown on the invoice or receipt.
unitPrice	Yes	The unit price of the article including VAT. Both positive and negative values allowed. Max 2 decimals, i.e. 100.00
unitWeight	No	The weight of the article. Only positive values are allowed (including zero)
quantity	Yes	The quantity of the article. Allowed values are 1 to 99999999.
vat	Yes	The VAT of the article in percent. Allowed values are 0 to 100. Max 2 decimals, i.e. 25.00
requiresElectronicId	No	To minimize the risk of a fraudulent purchase on credit products, it is possible to force the customer to strongly identify themselves at the point of purchase using electronic id such as Mobilt BankID. An example would be selling tickets that are delivered electronically. This feature does not validate the age of the customer and is supported for credit payments for B2C and B2B on the Swedish, Norwegian and Finnish markets.
minimumAge	No	The minimum age required to purchase this product. Allowed values are 1 to 120. When this property is set, we require the user to enter a civic number and verify it with electronic id before making the payment. If multiple items has different minimumAge, we use the highest age. This feature is supported for B2C on the Swedish market.
sku	No	A stock Keeping Unit is a unique alphanumeric code that is used to identify product types and variations. Maximum allowed characters are 1024.

Important error responses

Error code	Error Reason	Cause
400	Duplicate_Articles	Can't add article/fees since multiple articles/fees with same id and description already exist.
400	Validation_Error	The request contains properties with invalid values. Details are provided in the response body.
423	Resource_Locked	Another modifying request is currently being executed for the Checkout session. Retry by sending the request again.
900	Purchase_Commitment_Found	The customer has clicked the Complete Purchase button and the Checkout is therefore locked for modifications.
900	Purchase_Completed	Purchase is already complete.