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Duplicate Activity Names

Using duplicate activity names in CPM scheduling undermines the core principles of clear communication, logical sequencing, accountability, and accurate tracking of project tasks. It can lead to confusion, miscommunication, and inefficiencies in project management. To maintain a well-organized and effective project schedule, it is essential to use unique and descriptive activity names for all tasks within the project plan.


  • Ambiguity: Duplicate activity names create ambiguity within the schedule. It becomes unclear which instance of the activity is being referred to, leading to confusion among project team members and stakeholders.
  • Loss of Traceability: CPM schedules are used to establish logical relationships between activities. Duplicate activity names make it challenging to trace these relationships accurately, hindering the ability to identify critical paths and dependencies.
  • Inaccurate Reporting: Duplicate activity names can lead to inaccuracies in project reporting and documentation. Progress tracking, issue identification, and analysis of schedule variances may become unreliable due to the confusion created by duplicate names.
  • Risk of Overlooking or Duplicating Work: With duplicate activity names, there is a risk of overlooking or duplicating work. Team members may inadvertently perform tasks they believe are unique but are, in fact, associated with other similar activities.
  • Difficulty in Schedule Management: Managing a schedule with duplicate activity names can be a logistical challenge. Project managers may spend more time deciphering the schedule and resolving conflicts, detracting from their ability to focus on other critical project management tasks.
  • Error-Prone Updates: Duplicate activity names can lead to errors during schedule updates. When changes are made to one instance of the activity but not to the others, inconsistencies can occur, impacting the overall schedule integrity.
  • Loss of Historical Data: Duplicate activity names can make it difficult to track historical project data. This data is essential for lessons learned, project performance analysis, and future project planning.