Unable to Test API:http://AADCDN.MSAUTH.NET

Hello I have a WEB API hosted on Azure and we are authenticating with Azure AAD but when we fire the Get Request it provides the error message like this looks like it is looking for another set of Authorization.I know that it looks for Federation Redirect URL using Okta Authentication when we sign in to access the resource.Do we have a way to pass on the credentials in POSTMAN as second level of Authentication to pass the security.Anybody has expert adivse on this.