How To Fix STC_TM199 - Task '&1' requires predecessor '&2' which occurs as successor

SAP Error Message - Details

• Message type: E = Error

• Message class: STC_TM - Task List Manager Messages

• Message number: 199

• Message text: Task '&1' requires predecessor '&2' which occurs as successor

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message STC_TM199 - Task '&1' requires predecessor '&2' which occurs as successor ?

  The SAP error message STC_TM199 indicates that there is a problem with the task dependencies in a transport management or task scheduling scenario. Specifically, it means that a task (denoted as &1) is being executed as a successor, but it requires a predecessor task (denoted as &2) that has not been completed or is not available.
  Cause:
  
  Task Dependency Violation: The task you are trying to execute has a defined dependency on another task that must be completed first. This could be due to incorrect task sequencing or configuration.
  Missing Predecessor Task: The predecessor task may not have been executed, or it may have failed, leading to the current task being unable to proceed.
  Configuration Issues: There may be issues in the configuration of the task dependencies in the transport management system or the task scheduling setup.
  
  Solution:
  
  Check Task Dependencies: Review the task dependencies in the transport management system. Ensure that the predecessor task (&2) is correctly defined and is completed before the successor task (&1) is executed.
  Execute Predecessor Task: If the predecessor task has not been executed, run it first. If it has failed, investigate the failure and resolve any issues before attempting to run the successor task again.
  Adjust Task Sequence: If the task sequence is incorrect, you may need to adjust the order of execution to ensure that all dependencies are satisfied.
  Review Logs: Check the logs for any additional error messages or warnings that may provide more context about why the predecessor task is not available.
  Consult Documentation: Refer to SAP documentation or support resources for guidance on managing task dependencies and resolving transport management issues.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like ST22 (Dump Analysis), SM21 (System Log), or SLG1 (Application Log) to gather more information about the error.
  Transport Management System (TMS): Familiarize yourself with the TMS configuration and how to manage task dependencies effectively.
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional troubleshooting steps related to this error message.
  
  By following these steps, you should be able to identify the root cause of the STC_TM199 error and implement a solution to resolve it.