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Configuration Error (PLCN0015): The ESM '...' already contains an idle task.

In your project, two user tasks of the type 'Idle task' are configured. However, only one idle task is allowed per controller.

Remedy

  1. Double-click the error message to open the 'Tasks and Events' editor of the 'PLCnext' node in the PLANT. The suspected table line is marked.
  2. Modify one of the suspected tasks by selecting a different 'Task type'.

For further information on tasks and how to edit them refer to the topic "Task Configuration".