diff -r a5f66aa04f68 -r 73f8e557549a src/jdk.jpackage/macosx/classes/jdk/jpackage/internal/resources/MacResources_ja.properties
--- a/src/jdk.jpackage/macosx/classes/jdk/jpackage/internal/resources/MacResources_ja.properties	Mon Sep 30 15:13:14 2019 -0400
+++ b/src/jdk.jpackage/macosx/classes/jdk/jpackage/internal/resources/MacResources_ja.properties	Mon Sep 30 15:59:50 2019 -0400
@@ -76,8 +76,8 @@
 message.app-image-dir-does-not-exist.advice=Confirm that the value for {0} exists.
 message.app-image-requires-app-name=When using an external app image you must specify the app name.
 message.app-image-requires-app-name.advice=Set the app name via the -name CLI flag, the fx:application/@name ANT attribute, or via the 'appName' bundler argument.
-message.app-image-requires-identifier=When using an external app image you must specify the identifier.
-message.app-image-requires-identifier.advice=Set the identifier via the -appId CLI flag, the fx:application/@id ANT attribute, or via the 'identifier' bundler argument.
+message.app-image-requires-identifier=Unable to extract identifier from app image.
+message.app-image-requires-identifier.advice=Use "--verbose" for extended error message or specify it via "--mac-package-identifier".
 message.building-dmg=Building DMG package for {0}.
 message.running-script=Running shell script on application image [{0}].
 message.preparing-dmg-setup=Preparing dmg setup: {0}.