title: getting error when try to save shipping information for user using magento 2 api
body: <p>Can not able to save the shipping information after process from cart to checkout . We are using magento 2 api. My post information is like that </p>
  
  <pre><code>{
  "addressInformation": {
  "shipping_address": {
  "id": 0,
  "region": "IND",
  "region_id": 0,
  "region_code": "string",
  "country_id": "IN",
  "street": [
  "string"
  ],
  "company": "string",
  "telephone": "123456789",
  "fax": "string",
  "postcode": "700091",
  "city": "Kolkata",
  "firstname": "Sauptik",
  "lastname": "Basak",
  "middlename": "string",
  "prefix": "string",
  "suffix": "string",
  "vat_id": "string",
  "customer_id": 2,
  "email": "test1@test1.com",
  "same_as_billing": 0,
  "customer_address_id": 0,
  "save_in_address_book": 1,      
  "custom_attributes": [
  {
  "attribute_code": "string",
  "value": "string"
  }
  ]
  },
  "billing_address": {
  "id": 0,
  "region": "string",
  "region_id": 0,
  "region_code": "string",
  "country_id": "IN",
  "street": [
  "string"
  ],
  "company": "string",
  "telephone": "123456789",
  "fax": "string",
  "postcode": "700091",
  "city": "Kolkata",
  "firstname": "Sauptik",
  "lastname": "Basak",
  "middlename": "string",
  "prefix": "string",
  "suffix": "string",
  "vat_id": "string",
  "customer_id": 2,
  "email": "string",
  "same_as_billing": 0,
  "customer_address_id": 0,
  "save_in_address_book": 0,      
  "custom_attributes": [
  {
  "attribute_code": "string",
  "value": "string"
  }
  ]
  },
  "shipping_method_code": "string",
  "shipping_carrier_code": "string",
  "extension_attributes": {},
  "custom_attributes": [
  {
  "attribute_code": "string",
  "value": "string"
  }
  ]
  }
  }
  </code></pre>
  
  <p>my end point is <a href="http://192.168.0.61/WallisFudge/index.php/rest/V1/carts/3/shipping-information" rel="nofollow noreferrer">http://192.168.0.61/WallisFudge/index.php/rest/V1/carts/3/shipping-information</a></p>
  
  <p>i am getting that error </p>
  
  <blockquote>
    <p>"message": "Unable to save shipping information. Please check input data."</p>
  </blockquote>
  
  <p>can not able to process checkout through magento 2 api</p>