config:
  mystackname:SCHEMA:
    secure: qqqqq
  mystackname:SCHEMA_CONFIG: https://
  azure-native:location: westus2
  azure-native:subscriptionId: aaaaaa
  azure-native:tenantId: bbbbbb
  fluid:password:
    secure: ccccccc
  fluid:username: abc*<http://xyz.com|xyz.com>

const config = new pulumi.Config()
const schema = config.require( 'SCHEMA' )

// the following don't work
const location = config.require( 'location' )
const location = config.require( 'azure-native:location' )
const location = config.require( 'azure-native.location' )

const location = new pulumi.Config('azure-native").require("location");

If you are writing code that will be imported into a broader project, such as your own library of components, you should pass your library’s name to the constructor. This string is used as a namespace for all configuration keys. Similarly, if you want to access the config of another library, such as the config for a standard library like aws, you should also pass the library’s name to the constructor.