Magento 2.2.4: You need to choose options for your item

Question

won't be able to add product to cart. I always got "You need to choose options for your item.". I am sure i have select all the required options.

This is the parameters i got when submitting the add to cart form.

         array(10) {
        ["uenc"]=>
          string(80) "aHR0cDovLzIwNi4xODkuMjA5LjYzLzIwLTktb3otaDJnby1jb25jb3JkLXRoZXJtYWwtYm90dGxlcw,,"
          ["product"]=>
          string(5) "15343"
          ["selected_configurable_option"]=>
          string(0) ""
          ["related_product"]=>
          string(0) ""
          ["form_key"]=>
          string(16) "88DObwCS6oMd7vJj"
          ["super_attribute"]=>
          array(1) {
            [983]=>
            string(3) "469"
          }
          ["options"]=>
          array(3) {
            [130]=>
            string(3) "524"
            [131]=>
            string(3) "526"
            [139]=>
            array(3) {
              ["month"]=>
              string(0) ""
              ["day"]=>
              string(0) ""
              ["year"]=>
              string(0) ""
            }
          }
          ["qty"]=>
          string(2) "24"
          ["validate_datetime_139"]=>
          string(0) ""
          ["options_140_file_action"]=>
          string(8) "save_new"
        }

Answer 1

I think after you did a reimport / configuration of configurable product , you messed with the attributes assigned . It means one /many of simple products dont have the attribute assigned, but the main configurable have 2 attributes required. For solving that:

1. If you aren`t using the second attr on configurable product, remove it from database.

2. If you are using the second attr, then you should assign the attributes on each simple product

3. You can Delete the products and do the reimport correctly .