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Unable to update app

Error Message:

Unable to update app: Error posting to URL : create?app_id=deporterversion=1 409 conflict Another transaction for this user is already in progress for this app and major version. That user can undo the transaction with appcfg’s “rollback” command.


In Powershell run (replacing the path with the correct project path):

cd \users\usr\workspace\project1
\opt\eclipse\plugins\\appengine-java-sdk-1.3.5\bin\appcfg rollback war