Kdjykuj

We had followed the add order process of
Magento 2 - Create order using REST API on the process of "Place Order" using the API "$base_url/index.php/rest/V1/guest-carts/56241bf6bc084cd7589426c8754fc9c5/order" with the params of { "paymentMethod": { "method": "checkmo" } } as put Method we are getting "Please select a valid payment method." from Rest API.

Is the payment method checkmo enabled for use in a normal checkout?

Do a normal onepage checkout and check what is being sent in the network tab of chrome developer tools. If my memory serves me, it also uses the rest api for that step.

1. Get Customer Token

http://magento-host/index.php/rest/V1/integration/customer/token?

username=aditya.shah@test.com&password=test@123

• method : POST

2. Get Cart ID (Quote ID) - using customer id.

This will return quote id, which will be used for placing an order.

http://magento-host/rest/V1/carts/mine

• method : POST


• Authorization : Bearer <customer token>

3. Add Configurable product in cart.

http://magento-host/index.php/rest/default/V1/carts/mine/items

• method : POST


• Authorization : Bearer <customer token>


• body data : json

{

  "cartItem": {

    "sku": "HKrh15hc", <product SKU>

    "qty": 5,

    "quote_id": "75", <Quote ID - Cart ID [see. step 2]>

    "product_option": {

      "extension_attributes": {

        "configurable_item_options": [

          {

            "option_id": "93",

            "option_value": 49

          },

          {

            "option_id": "141",

            "option_value": 168

          }

        ]

      }

    },

    "extension_attributes": {}

  }

}

Now, this will save your configurable product in your cart.

4. Get & put Shipping Information.

http://magento-host/index.php/rest/V1/carts/mine/shipping-information

• method : POST


• Authorization : Bearer <customer token>


• body data : json

{

    "addressInformation": {

        "shippingAddress": {

            "region": "MH",

            "region_id": 0,

            "country_id": "IN",

            "street": [

                "221,Baker-street (e)"

            ],

            "company": "Lumos",

            "telephone": "12345678",

            "postcode": "400001",

            "city": "Mumbai",

            "firstname": "Aditya",

            "lastname": "Shah",

            "email": "Aditya@Shah.com",

            "prefix": "address_",

            "region_code": "MH",

            "sameAsBilling": 1

        },

        "billingAddress": {

            "region": "MH",

            "region_id": 0,

            "country_id": "IN",

            "street": [

                "221,Baker-street (e)"

            ],

            "company": "Lumos",

            "telephone": "12345678",

            "postcode": "4000001",

            "city": "Mumbai",

            "firstname": "Aditya",

            "lastname": "Shah",

            "email": "Aditya@Shah.com",

            "prefix": "address_",

            "region_code": "MH"

        },

        "shipping_method_code": "flatrate",

        "shipping_carrier_code": "flatrate"

    }

}

5. Get payment method.

http://magento-host/index.php/rest/V1/carts/75/payment-methods

• method : POST


• Authorization : Bearer <customer token>

6. Place an order.

http://magento-host/index.php/rest/V1/carts/mine/order

• method : POST


• Authorization : Bearer <customer token>


• body data : json

{

    "paymentMethod": {

        "method": "checkmo"

    }

}

And finally, this will return order ID, which you just placed!