Renumber activity IDs in the Activity Table

This task renumbers activity IDs for the current project and, if applicable, renumbers the same activity IDs in baselines for this project.

1. Select the activity you want to renumber. To select multiple activities, use Ctrl+click or Shift+click.
2. Choose Edit, Renumber Activity IDs.
3. Proceed as follows from the Renumber Activity IDs dialog box:
   
   Specify how you want to renumber the activity IDs.
   
   The Renumber Selected Activities in Baselines checkbox is marked by default if baselines exist for the project. Be aware that if you clear this checkbox, all renumbered activities are disconnected from the baselines and are treated as new activities.
   
   Click OK.
   
4. The Duplicates dialog box may appear after clicking OK. If it appears, type new activity IDs, as applicable, and click OK.

   Note:

   If you click Cancel in the Duplicates dialog box, no activity IDs are renumbered, including activity IDs that are not duplicates.

5. If you marked the Renumber Selected Activities in Baselines checkbox on the Renumber Activity IDs dialog box, P6 Professional searches for baselines where duplicate activity IDs would be created. If it finds none, then the current project and its associated baselines are renumbered, and the baseline renumbering is committed to the database with no chance for you to undo the renumbering. If P6 Professional finds any baselines where duplicate activity IDs would be created, the Baseline Duplicates dialog box appears and lists the names of those baselines; P6 Professional does not renumber activity IDs in a baseline if it detects that doing so would create duplicate activity IDs.
   
   From the Baseline Duplicates dialog box, click one of the following:
   • Yes
     
     Click Yes to apply renumbering to baselines that can be renumbered. When you click Yes, you have no further chance to undo the renumbering, which is committed to the database. Also, be aware that when you click Yes, the baselines listed in the Baseline Duplicates dialog box will not synchronize with the current project, which impacts the accuracy of comparison data and earned value if these baselines are subsequently used against the current project.
   • No
     
     Click No to cancel the renumbering process for baselines and to undo the renumbering for the current project.

Notes:

• You must have the Edit Activity ID project security privilege to renumber activity IDs.
• When connected to a P6 Professional database: If the current project has baselines, you must have the Maintain Project Baselines project privilege to access the Renumber Activity IDs dialog box.

When connected to a P6 EPPM database: If the current project has baselines, you must have the appropriate project privilege assigned using P6 to access the Renumber Activity IDs dialog box.

• You can renumber activity IDs in a single project only.
• You can renumber activity IDs when multiple projects are open; however, you can not renumber activity IDs when you select activities in multiple projects.