We have 82 applications which will be going live in production when I am trying to generate a FORCAST for whole week I am getting forecast details only for 57 applications.
In the definition of the forecast we have Threshold frequency in minutes. The default is 120 minutes.
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An Event execution is excluded from the forecast report if the time between its scheduled execution and its next scheduled execution is less than the threshold frequency. For example, to exclude all Events that run more frequently than two hours, enter 120.
So to get all the jobs we need to decrease the frequency to a lesser value. You can enter 10 minutes to list all the jobs which has execution frequency more than 10 mins.
For more details please refer to the following documentation.