Job is Rejected with PitStop Server Error
When you print a job file through a workflow that contains the External Preflight activity, the job might get into error state with the error message: AIWI6073E: The job finished with error return code {1}.. AIWI0017I 349: Job x was rejected because PitStop Server is not allowed to run.
Usually, this happens when PitStop Server is started for the first time.
Stop the PitStop Server application, including the background jobs processing, then restart it.