Magento 2.4 REST API for Create Cart Not Working

Question

I am trying to create the magento default REST API for add simple product to cart like this way.

1. First I generate the customer token with the use of this API Call. https://www.domain.com/rest/default/V1/integration/customer/token And it will successful return the token.

2. Now with the use of that token, I call another API to added the product to the existing cart like this : https://www.domain.com/rest/default/V1/carts/mine/items

   Headers:

   Content-Type: application/json

   Authorization: Bearer "CUSTOMER TOKEN"

And Pass the parameter as POST

{
    "sku": "PO-002",
    "qty": 1,
    "quote_id": "4"
}

And it always return the error like this :

{
    "message": "\"%fieldName\" is required. Enter and try again.",
    "parameters": {
        "fieldName": "cartItem"
    }
}

See the image :

Can any one help me here?

Answer 1

Please look at the example in the docs. The item should have a key named cartItem. Use the body to send a json that looks something like this:

{
    cartItem: {
        "sku": "PO-002",
        "qty": 1,
        "quote_id": "4"
    }
}