Run limit
Every user is assigned a specific number of job runs that they can execute each month.
In the past, users were assigned a number of scheduled jobs they could set. A single job may have run once a month or once an hour, and regardless of how often it ran, it counted against your job limit. Run limits allowed you to have any number of jobs. Now, you are limited by the specific number of job runs that you are assigned. This number is displayed by the Monthly Run Summary. For more information, see Monthly Run Summary.
When you create a scheduled job, you select the frequency that it is executed. Each execution is a job run. For example, if you create a scheduled job with hourly frequency, 24 job runs will be executed in one day. Each job run deducts from your allowed monthly runs. A new job, or change in the frequency of an existing job, may not trigger enough runs to go over your remaining run limit for the current month, but may exceed the run limit of the next month when combined with all of your jobs.
We recommend checking the monthly run summary at the beginning of each month to verify the planned number of jobs for the month. If your scheduled jobs produce more runs than your run limit, the remaining job runs for the month are not executed, and you are sent an email for each run that is not performed.