The 'checkpoint 1' notification allows notification when a job fails to achieve either a specified number of task completions, or a specified number of information/OK messages within a specified elapsed time. The elapsed time is the time from the absolute minimum start time. This notification will only occur when the job is running. If the job has failed to start, completed or failed when the external monitor checks the checkpoint, this notification will be ignored. See the notes under 'Must Start Within' for the action taken if the criteria is not met.