Get Rate API Not Working in Sandbox

Hello Team,

I am trying to get some results of rates API but I am always getting the below response.

{
"rates": [],
"messages": [
"Sorry, we couldn't find any shipping solutions based on the information provided."
]
}

I tried to call this API from Postman collection.

Based on this response I have to call shipment APIs but because of this, I am stuck.

However, it's working in production mode but I can not use that during the development.