This tutorial shows how to create a report for the chosen identities which compares identity attribute values to the mapped attribute values in a connected system. This report can be used if you change some attribute or in script where the value is calculated. There is no need to set the connected system to read only.
If you write a new script or want to change the current one, but you are in the production environment, you can use this report to be sure nothing bad happens. You can make a report with the attribute and different script. The report will compare value transformed with this new script and value stored in system and you will have confirmation about the changes that would happen.
Thank you for reading this tutorial and I hope this tutorial and report is useful to you.