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Error 'VTFIO-1137-1 Could not find field task_code in vtable TASKPRED' When Attempting to Change Predecessor/Successor to an Activity (Doc ID 2557740.1)

Last updated on JUNE 13, 2022

Applies to:

Primavera P6 Professional Project Management - Version and later
Information in this document applies to any platform.


When attempting to add a successor or predecessor to an activity, the following error occurs:

Event Code: VTFIO-1137-1
Description: TCVirtualTable.FieldIndexOf: Could not find field task_code in vtable TASKPRED


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

  1. Open a project and select an activity.
  2. In the Details section in the bottom pane, select Relationships.
  3. Attempt to add a predecessor to the activity.
  4. Observe the reported error.




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