This video gives an overview of the debugger in PowerCenter.
For further information, refer the following document:
https://docs.informatica.com/data-integration/powercenter/10-5/designer-guide/using-the-debugger.html
https://knowledge.informatica.com/s/article/532442?language=en_US
How to unassign services from an expired key and assign them to a valid key in 9.1.0 and 9.5.1
How to automate the repository and domain back up process for disaster recovery in PowerCenter
How to find in which host the Repository Integration service is running in a multi node domain