CORS Error while doing a POST request

1 
let options = {
  method: "POST",
  body: JSON.stringify({ apiKey: "keygiven" }),
  headers: {
    "Content-type": "application/json",
  },
};

 fetch("https://api.sauda.co/suvidha/allCompletedOffers", options)
    .then((response) => console.log(response))
    .catch((err) => console.log(err));

I get CORS error when I do this request to a remote API. How do I fix this? Is it fixable only who owns that domain?