How To Fix CNV_PE_TB004 - Error assigning predecessors to task &1 for object &2 (subobject &3)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_TB - PE Task Board Messages

• Message number: 004

• Message text: Error assigning predecessors to task &1 for object &2 (subobject &3)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_TB004 - Error assigning predecessors to task &1 for object &2 (subobject &3) ?

  The SAP error message CNV_PE_TB004 typically occurs during the execution of a conversion or migration process, particularly when dealing with task assignments in a project or data migration scenario. This error indicates that there is an issue with assigning predecessor tasks to a specific task for a given object and subobject.
  Cause:
  The error can be caused by several factors, including:
  
  
  Missing Predecessor Tasks: The predecessor tasks that are supposed to be assigned to the specified task may not exist or may not be correctly defined in the system.
  
  
  Incorrect Object/Subobject: The object or subobject specified in the error message may not be valid or may not correspond to the expected configuration in the system.
  
  
  Data Integrity Issues: There may be inconsistencies or integrity issues in the data that prevent the assignment of predecessors.
  
  
  Configuration Issues: There may be configuration settings in the project or migration tool that are not set up correctly, leading to this error.
  
  
  Authorization Issues: The user executing the task may not have the necessary authorizations to perform the assignment.
  
  
  Solution:
  To resolve the CNV_PE_TB004 error, you can take the following steps:
  
  
  Check Predecessor Tasks: Verify that the predecessor tasks exist and are correctly defined in the system. Ensure that they are active and not in a deleted or inactive state.
  
  
  Validate Object/Subobject: Confirm that the object and subobject specified in the error message are correct and correspond to the expected values in the system.
  
  
  Review Data Integrity: Check for any data integrity issues that may be affecting the assignment of predecessors. This may involve reviewing related tables or data entries.
  
  
  Configuration Review: Review the configuration settings related to the project or migration tool to ensure that they are set up correctly. This may involve checking project settings, task definitions, and any related parameters.
  
  
  Authorization Check: Ensure that the user executing the task has the necessary authorizations to perform the assignment. This may involve checking user roles and permissions.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration or conversion process you are working on. There may be specific guidelines or troubleshooting steps provided by SAP.
  
  
  Contact SAP Support: If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. Provide them with the error message details and any relevant context to help them diagnose the issue.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help in managing tasks and predecessors, such as CNV_*, SE80, or others related to your specific project.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the root cause of the CNV_PE_TB004 error and implement an appropriate solution.