Change Success Score - Regenerating scores and calculating historic scoresInstructions In some cases it might be necessary to generate Change Success Scores anew. These cases include but are not limited to: introduction of new measurement metrics;change in the formula;incomplete and incorrect data left after initial experimentation; Please note: depending on the number of Groups on the instance this process might take a long time. To regenerate Change Success Scores or generate historic scores please follow the steps outlined below. If you previously had any Change Success Scores generated please run the following script in global scope of background scripts to clean out old scores:var metricGr = new GlideRecord('metric_instance'); metricGr.addEncodedQuery('definition=c8b3e4c173c01010491d235f04f6a726'); metricGr.deleteMultiple();Navigate to Performance Analytics > Data Collector > Jobs.Filter by name containing "Change Success".To begin with as historic collection can take a long time we need to disable "Change success score metrics (Daily)" job in order to avoid it interfering with collection. This can be done by unchecking Active checkbox in "Job parameters" section:Save "Change success score metrics (Daily)".Open "Change success score metrics (Historical data)" job.Make any adjustments needed to collection period by changing "Relative start" to the desired number of days for which scores should be generated:Execute it using "Execute now" UI action in the top bar (please note: to see the action you need to be in "Change Management - Change Success Score" scope):As mentioned before, the process of generating historic data can take a while. You can confirm that it was complete by looking at the "Job Logs" related list in "Change success scores (Historical data)" job:Once historic scores are generated please re-enable "Change success score metrics (Daily)" job.