Description: If you cancel an OS image Import plan or a Provision OS plan, the plan operations continue in the background. This issue occurs under the following circumstances.
OS Image Import - If you cancel an OS Image Import plan before the image is fully imported, the plan is cancelled, but the import operation continues in the background until the image is imported.
Provision OS - If you configure the OS Provisioning server to perform provisioning operations in the foreground, and then cancel a Provision OS plan before the OS is provisioned, the provisioning continues in the background.
Workaround: Kill the import or provisioning process manually on the OS Provisioning server or boot and install server.