1.Created a guest cart (this will give me the cartID)-> POST: http://.../Magento2/index.php/rest/V1/guest-carts
Get cart details-> GET: http://.../Magento2/index.php/rest/V1/guest-carts/{cartID}.
add items to cart-> POST: http://.../Magento2/index.php/rest/V1/guest-carts/{cartID}/items
Added in body part. { "cartItem": { "item_id": 0, "sku": "string", "qty": 0 } }
Getting Error :- { "message": "No such entity with %fieldName = %fieldValue", "parameters": { "fieldName": "cartId", "fieldValue": null },
Thanks in advance.
For ref. Testing in postman client & using http://devdocs.magento.com/swagger/index.html#/ link.