How To Fix STC_TM002 - Task '&1' requires predecessor '&2' which is missing or on wrong position

SAP Error Message - Details

• Message type: E = Error

• Message class: STC_TM - Task List Manager Messages

• Message number: 002

• Message text: Task '&1' requires predecessor '&2' which is missing or on wrong position

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message STC_TM002 - Task '&1' requires predecessor '&2' which is missing or on wrong position ?

  The SAP error message STC_TM002 indicates that a task in a transport management or background processing scenario is dependent on a predecessor task that is either missing or not in the correct position in the sequence. This typically occurs in the context of task chains or background jobs where tasks are interdependent.
  Cause:
  
  Missing Predecessor Task: The predecessor task that the current task depends on has not been created or is not available in the task chain.
  Incorrect Position: The predecessor task exists but is not positioned correctly in the sequence. The current task may be trying to execute before its required predecessor has completed.
  Configuration Issues: There may be issues with the configuration of the task chain or the transport management system that lead to incorrect dependencies being set.
  Manual Changes: If there were manual changes made to the task chain or job scheduling, it could lead to inconsistencies in task dependencies.
  
  Solution:
  
  Check Task Chain Configuration: Review the configuration of the task chain to ensure that all tasks are defined correctly and that the predecessor tasks are included.
  Verify Task Status: Check the status of the predecessor task to ensure it has been executed successfully before the current task is triggered.
  Reorder Tasks: If the predecessor task is present but in the wrong position, reorder the tasks in the task chain to ensure that dependencies are respected.
  Create Missing Tasks: If the predecessor task is missing, create it as needed and ensure it is correctly configured.
  Review Logs: Check the logs for any additional error messages or warnings that might provide more context about the issue.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance on task chains and dependencies.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like ST22 (Dump Analysis), SM37 (Job Monitoring), or STC01 (Task Chain Management) to investigate further.
  SAP Notes: Look for relevant SAP Notes that might address known issues or provide patches related to task management.
  Transport Management System (TMS): Familiarize yourself with the TMS configuration and how task dependencies are managed within it.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the STC_TM002 error and implement a solution to resolve it.