Your device is attached with the DSP, so even if you choose source of device UN and PWD enter at job time, and if you do not put UN and PWD at job time, BNA itself check which DSP is attached with the device or may be you set Auto DSP, it will check all DSPs and if it not found any credentials matching with the device then your job will get failed notification. I can not say this is bug, this is intentional to execute all jobs successfully.
In addition to that. Snapshot jobs are always using DSP, regardless on how this is configured.
The UN / PW option only really is for running template actions against devices.
Mukesh, for keeping track of what user does what, BNA already tracks this. if you run a job as your own user name, this should be shown in the job listing.
The system is performing as designed. The snapshot routine always uses the DSP provided for the device. Only the tasks that make a change to the device will use the supplied credentials. Try doing a merge and supply bad credentials and you will see that it fails.
Sent from my mobile phone.