How To Fix /PLMI/ECN_SP004 - Cannot collapse object type task list for change number &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /PLMI/ECN_SP -

• Message number: 004

• Message text: Cannot collapse object type task list for change number &1

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PLMI/ECN_SP004 - Cannot collapse object type task list for change number &1 ?

  The SAP error message /PLMI/ECN_SP004 Cannot collapse object type task list for change number &1 typically occurs in the context of Engineering Change Management (ECM) within SAP. This error indicates that there is an issue with collapsing or processing a task list associated with a specific change number.
  Causes:
  
  Task List Not Found: The task list associated with the change number may not exist or may not be properly defined in the system.
  Authorization Issues: The user may not have the necessary authorizations to access or modify the task list.
  Inconsistent Data: There may be inconsistencies or errors in the data related to the change number or task list.
  System Configuration: There may be configuration issues in the ECM module that prevent the task list from being processed correctly.
  Locked Objects: The task list or related objects may be locked by another user or process, preventing the operation from completing.
  
  Solutions:
  
  Check Task List Existence: Verify that the task list associated with the change number exists in the system. You can do this by navigating to the relevant transaction (e.g., C223 for change numbers) and checking the details.
  Review Authorizations: Ensure that the user has the necessary authorizations to access and modify the task list. This may involve checking roles and permissions in the user profile.
  Data Consistency Check: Perform a consistency check on the data related to the change number and task list. Look for any missing or incorrect entries that may need to be corrected.
  System Configuration Review: Consult with your SAP Basis or configuration team to review the settings related to Engineering Change Management. Ensure that all necessary configurations are in place.
  Unlock Objects: If the task list or related objects are locked, identify the user or process that has locked them and resolve the issue. This may involve contacting the user or using transaction SM12 to view and manage locks.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error. SAP frequently releases updates and patches that may resolve known issues.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as C223 (Change Number), C201 (Task List), and C202 (Change Document).
  SAP Documentation: Refer to the official SAP documentation for Engineering Change Management for detailed information on task lists and change numbers.
  Support: If the issue persists after trying the above solutions, consider reaching out to SAP support or your internal IT support team for further assistance.
  
  By following these steps, you should be able to diagnose and resolve the error message related to collapsing the task list for the specified change number.