Error: "Errors located: WBS Name: Unique constraint (Parent,Project ID,WBS Name) violated. The value $WBSNAME of the field WBS Name already exists" When Running Update Baseline

Last updated on DECEMBER 05, 2017

Applies to:

Symptoms

When attempting to run update baseline against a project after making a change to an existing WBS Code value, the update baseline job fails and the following error is reported in the Update Baseline log file:

ERROR
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SEVERE ----- Errors located: WBS Name: Unique constraint (Parent,Project ID,WBS Name) violated. The value $WBSNAME of the field WBS Name already exists

STEPS
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The issue can be reproduced at will with the following steps:

1. Login to P6 Professional
2. Create a new project
3. Create a WBS Element in the project
4. Add an activity to the WBS element
5. Select Project, Maintain Baseline
6. Select Add, Save a copy of the current project as a new baseline, OK
7. Select Close to the Maintain Baseline window
8. Change the name of the WBS Code
9. Select Project, Maintain Baseline
10. Highlight the baseline and select Update
11. Select the following options:
    • Add new activities and activity data (except actuals)
    • Run Optimized
    • Note, it likely will not matter which options are selected on this page
12. Select Update
13. Note the job failure and the error in the log file

Cause