There are no available services for the countries you’ve selected" with CarrierService - shopify

Question

I am integrating carrier service API for shopify store. I have partner account and also i have created development store. After installed my app in my store and subscribed carrier service. But in store shipping settings page i got an error
There are no available services for the countries you’ve selected
How to overcome this issue?
I have in the settings page:
My Carrier Service 5588680759
Rate adjustment: 0% + $0.00
There are no available services for the countries you’ve selected.
Automatically offering future shipping services when they become available
Screenshot:
how can i implement on Checkout Page?

Answer 1

I had the same problem and i solved it changing the callback url of the carrier service to public on my shopify application, you have to check if the url is accessible for everyone. (sorry for my english)
Shopify Documentation

Answer 2

You have to define Call url in shipment carries
"callback_url"=> base_url().'shipment/rates'
add these in controller or file which you add in call url
$filename = time();
$input = file_get_contents('php://input');
file_put_contents($filename.'-input', $input);
// parse the request
$rates = json_decode($input, true);
// log the array format for easier interpreting
file_put_contents($filename.'-debug', print_r($rates, true));
// total up the cart quantities for simple rate calculations
$quantity = 0;
foreach($rates['rate']['items'] as $item) {
$quantity =+ $item['quantity'];
}
// use number_format because shopify api expects the price to be "25.00" instead of just "25"
// overnight shipping is 5 per item
$overnight_cost = number_format(5, 2, '', '');
// overnight shipping is 1 to 2 days after today
$on_min_date = date('Y-m-d H:i:s O', strtotime('+1 day'));
$on_max_date = date('Y-m-d H:i:s O', strtotime('+2 days'));
// build the array of line items using the prior values
$output = array('rates' => array(
array(
'service_name' => 'Shipment Local',
'service_code' => 'SL',
'total_price' => $overnight_cost,
'currency' => 'PKR',
'min_delivery_date' => $on_min_date,
'max_delivery_date' => $on_max_date
)
));
// encode into a json response
$json_output = json_encode($output);
// log it so we can debug the response
file_put_contents($filename.'-output', $json_output);
// send it back to shopify
print $json_output;
Change According to you needs