Error with Shopify CarrierService App response receiving

Yuriy_FEA
New Member
2 0 3

Dear Shopify Community, 

I'm working on 3rd party CarrierService App based on Google Apps Script and carrier service https://shopify.dev/docs/admin-api/rest/reference/shipping-and-fulfillment/carrierservice  REST API. At this moment I use the development store type. CarriersService with callback URL has been successfully created and my app receives POST request and sends such response JSON:

{

"rates": [
{
"service_name": "Test Shipping Rate Provider",
"service_code": "MSSR",
"total_price": "18.5",
"description": "Special rates for multiple item quantity purchase",
"currency": "USD"
}
]
};