Troubleshooting SCM > SCM Download Error Messages Shown in the Application Log > Could not activate transfer job (SCM Download)
Could not activate transfer job (SCM Download)
Unable to dispatch [
uri = /Things/TW.RSM.SFW.SoftwareManager/Services/StartTransfer/]:
Unable to Invoke Service StartTransfer on TW.RSM.SFW.SoftwareManager :
Could not activate transfer job <transfer job ID> for delivery target <delivery target ID>
(transfer job state: <state>, message: <message>)
This error message appears if two transfer jobs attempt to write to the same file on the targeted Thing at the same time. This situation can occur if either of the following occurs:
The targeted Thing allows more than one delivery target to run at a time (controlled by the maxConcurrentUpdates property), and two or more delivery targets installing at the same time try to download the same file to the same location.
A delivery target is trying to download a file to a Thing that is already downloading that file to the same location as part of a transfer job started outside SCM.
This issue is caused by the File Transfer Subsystem of the ThingWorx Platform. The subsystem does not allow more than one transfer job to send bytes to the same location on the same Thing at the same time.
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