Problem Statement : If we want to use the data transform rule in Pega to copy data from one Pagelist or PageGroup to another with a set of conditions Example: I have a pagelist that contains all of the enrolled students in school, and I copied it to a different pagelist based on class 10 students. Solution: We choose to append and map to, and add both pagelists on both sides using the Data Transform rule We also add the condition there using the Key icon, which is only visible when we select each page in Note: The key icon is a useful but often overlooked feature of data transform.