Here you will find an explanation and best practices for solving issues around compatibility.
Category: Compatibility
Warning message: The file used in the previous synchronization was saved with a newer Revit version %s than the current file saved with Revit version %s. Forward compatibility may not be fully supported.
Issue:
The previous synchronization was completed with a file saved with a newer version of Revit.
Cause:
Revit is not forward compatible, meaning that a model saved in a newer version (e.g., Revit 2024) cannot be opened or synchronized using an older version (e.g., Revit 2023).
Solution:
To avoid this scenario, use a constant version of Revit for your synchronization or if you do go to a newer Revit version, stay with that version.