How To Fix PEP052 - You cannot change task lists in the SAP name range

SAP Error Message - Details

• Message type: E = Error

• Message class: PEP - Schedule Manager: Messages

• Message number: 052

• Message text: You cannot change task lists in the SAP name range

What causes this issue?

Task lists that begin with a number cannot be changed.

How to fix this error?

Use the Task list --> Save as... function to create a copy of the SAP
task list in your name space. You can then edit this copy.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PEP052 - You cannot change task lists in the SAP name range ?

  The SAP error message PEP052, which states "You cannot change task lists in the SAP name range," typically occurs when you attempt to modify a task list that is part of the SAP standard or is locked for changes. This is a common issue in SAP systems, particularly in the context of production planning and control.
  Cause:
  
  SAP Standard Task Lists: The task list you are trying to modify is part of the SAP standard and is not intended to be changed by users. SAP provides standard task lists that are meant to be used as templates.
  Authorization Issues: You may not have the necessary authorizations to make changes to the task list.
  Task List Status: The task list may be in a status that does not allow changes (e.g., it may be locked or released).
  Name Range Restrictions: The task list falls within a specific name range that is reserved for SAP standard objects.
  
  Solution:
  
  Create a Copy: Instead of modifying the standard task list directly, create a copy of the task list. You can then make changes to the copied version without encountering the error.
  
  Use the transaction code CA01 (Create Task List) to create a new task list based on the existing one.
  
  
  Check Authorizations: Ensure that you have the necessary authorizations to modify task lists. You may need to contact your SAP security administrator to verify your permissions.
  Review Task List Status: Check the status of the task list. If it is locked or released, you may need to unlock it or create a new version.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on working with task lists and understanding the naming conventions and restrictions.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as CA01 (Create Task List), CA02 (Change Task List), and CA03 (Display Task List).
  SAP Notes: Check SAP Notes for any specific patches or updates related to task list management that may address known issues or provide additional guidance.
  Training and Documentation: Consider reviewing SAP training materials or documentation related to task list management in your specific module (e.g., PP - Production Planning).
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.