Run a historical data collection job to collect scores and snapshots for existing records. When collecting data for the first time, such as for a new indicator, run historical data collection once to generate scores and snapshots for existing records.

1. Navigate to Performance Analytics > Data Collector > Jobs.
2. Select a historical data collection job, such as [PA Change] Historic Data Collection, or create a new historic data collection job.
3. If you are creating or editing the historic data collection job, follow the procedure in Create or schedule a data collection job.
   Important: For a historical data collection job, set Run to On demand. Do not run historical data collection jobs on a fixed schedule.
4. In the job indicators, exclude any breakdowns that are based on fields whose value is likely to change during the historical collection period, as described in Configure a job indicator.
   For example, in the provided [PA Incident SLA] Historic Data Collection job, the job indicator 'Number of open and overdue incidents' excludes the Assignment Group and the State breakdowns. The value of both of these breakdowns could change over the data collection period, making the results meaningless.
5. Click Execute Now.