If you are using a Primavera file and face end date discrepancies, the cause of discrepancies could likely be that your latest file in P6 was not 'Scheduled' using the P6 Schedule tool.
In Oracle Primavera P6, the Schedule Project tool is used to calculate and update the project’s schedule by processing the logic, relationships, and constraints between activities. This tool helps determine the earliest and latest start and finish dates for activities, updating the project timeline according to the Data Date.
In P6, go to the Tools menu > 'Schedule' tool, or you can access the 'Schedule' tool by pressing "F9"
After performing the 'Schedule' function, you will want to compare the end date for your project/key milestone in P6 to the scheduled end date in SmartPM. If the end dates do match, you will want to export your newly updated P6 file and re-upload to SmartPM.
If you are still having a date discrepancy after performing the 'Schedule' function, please contact SmartPM Support: support@smartpmtech.com