I found this answer on other post. You can't. You might be able to create a new app, then submit a request (via billing issues form -- see FAQs) to create an alias from the old to new app id.
Robert On 15 mar, 12:08, Simon Knott <knott.si...@gmail.com> wrote: > It was mentioned on this forum a few weeks ago that App IDs are not freed > up, even when deleted. I can't find the message from Ikai at the moment - > the process to migrate to HR is to create a new app and to get Google to > create an alias, pointing your old app ID to the new app ID. -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
