How To Fix /PLMU/PPE_ENG_UI128 - Simulation &1 already exists; you are not authorized to change it

/PLMU/PPE_ENG_UI128 - Overview

• Message type: E = Error

• Message class: /PLMU/PPE_ENG_UI -

• Message number: 128

• Message text: Simulation &1 already exists; you are not authorized to change it

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PLMU/PPE_ENG_UI128 - Simulation &1 already exists; you are not authorized to change it ?

  The SAP error message /PLMU/PPE_ENG_UI128 Simulation &1 already exists; you are not authorized to change it typically occurs in the context of the SAP Production Planning and Execution (PP/PE) module, particularly when dealing with simulations or planning scenarios. Here’s a breakdown of the cause, potential solutions, and related information:
  
  Cause:
  
  Existing Simulation: The error indicates that a simulation with the identifier &1 already exists in the system. This means that the system has detected a duplicate entry for the simulation you are trying to create or modify.
  Authorization Issues: The user attempting to make changes does not have the necessary authorizations to modify the existing simulation. This could be due to role restrictions or missing authorizations in the user's profile.
  
  Solutions:
  
  
  Check Existing Simulations:
  
  Navigate to the relevant transaction or application where simulations are managed (e.g., transaction codes related to planning or simulation).
  Look for the simulation with the identifier &1 to confirm its existence and status.
  
  
  
  Modify