What is xer?

XER is a filename extension for a project file used by Primavera P6, a popular project management software. These files are self-contained and hold all the project data. They allow for easy transfer of project information between different Primavera P6 installations or users. Specifically, an XER file is a proprietary data format that contains project schedules, resource assignments, cost information, and other related data. It is essentially a way to export and import project information from Primavera P6.

XER files are useful for:

• Project Backup: Saving a project for safekeeping.
• Data Sharing: Sharing project data with collaborators.
• Archiving: Storing historical project information.
• Version Control: Maintaining different versions of a project.

While XER files are convenient for sharing, it's important to note that they can sometimes be prone to data corruption, especially when dealing with large projects or older versions of Primavera P6. Newer versions of Primavera often offer alternative file formats that may be more robust.