PreBuild Vs PostBuild Event in PeopleSoft

PreBuild fires before any PeopleCode code event on all the rows and fields in the component such as FieldDefault and RowInit. During the PreBuild event, there will not be any data in the component buffer other than the search record as it's executing prior to the component build process.

During the PostBuild event, you will have access to the data read from the database into the component buffer.

PreBuild and PostBuild is most commonly used to hide or unhide pages.

HAPPY LEARNING :)