Update 29/09/2016: The API documentation for importing a vRA Content Package contains a warning: At this point, we don’t support any form of rollback strategies. A failed import may potentially leave the system in an inconsistent state. Hence, its highly recommend to run a precheck/dry-run before the import to validate the package. See HTTP POST /api/packages/validate for more details. This will help catch most of the errors upfront. Consequently, in release 1.