This endpoint is used to add or update data about the current transaction as a whole.
| Param Name | Required | Type | Notes |
|---|---|---|---|
cart_value | No | Integer | The total value of the cart in cents |
cart_item_count | No | Integer | The total number of items in the cart |
promo | No | String | Promo code applied to the cart |
return_url | No | String | The unique url to return to the cart page |
order_number | No | String | External ID for the order |
Any additional params will be treated as strings and added to the
metadatafield of the cart.