As part of the job configuration, an administrator should be able to specify whether a user should be prompted if a user attempts to create a duplicate job.
An example for this would be the create visualization jobs. Users shouldn't be prompted that a duplicate job exists if they check in the file a second time before the first job was completed.
For certain jobs, you need this notification, for others it is completely unnecessary. Also, it shouldn't go into the error log on the vault server.