}
	// Check if bucket exists.
	if !r.OutputLocation.IsEmpty() {
		if _, err := objAPI.GetBucketInfo(ctx, r.OutputLocation.S3.BucketName, BucketOptions{}); err != nil {
			return err
		}
		if r.OutputLocation.S3.Prefix == "" {
			return fmt.Errorf("Prefix is a required parameter in OutputLocation")
		}
		if r.OutputLocation.S3.Encryption.EncryptionType != xhttp.AmzEncryptionAES {

		if alreadyRestored {
			return
		}
	}

	restoreObject := mustGetUUID()
	if rreq.OutputLocation.S3.BucketName != "" {
		w.Header()[xhttp.AmzRestoreOutputPath] = []string{pathJoin(rreq.OutputLocation.S3.BucketName, rreq.OutputLocation.S3.Prefix, restoreObject)}
	}
	w.WriteHeader(statusCode)
	// Notify object restore started via a POST request.
	sendEvent(eventArgs{