locationUri 
  A URI to locate the configuration. You can specify the following:
- For the AppConfig hosted configuration store and for feature flags, specify - hosted.
- For an Amazon Web Services Systems Manager Parameter Store parameter, specify either the parameter name in the format - ssm-parameter://<parameter name>or the ARN.
- For an Amazon Web Services CodePipeline pipeline, specify the URI in the following format: - codepipeline://- . 
- For an Secrets Manager secret, specify the URI in the following format: - secretsmanager://- . 
- For an Amazon S3 object, specify the URI in the following format: - s3://<bucket>/<objectKey>. Here is an example:- s3://amzn-s3-demo-bucket/my-app/us-east-1/my-config.json
- For an SSM document, specify either the document name in the format - ssm-document://<document name>or the Amazon Resource Name (ARN).