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How To Fix STC_TM020 - Task '&1' is mandatory in this task list; cannot be skipped


SAP Error Message - Details

  • Message type: E = Error

  • Message class: STC_TM - Task List Manager Messages

  • Message number: 020

  • Message text: Task '&1' is mandatory in this task list; cannot be skipped

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  • 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_TM020 - Task '&1' is mandatory in this task list; cannot be skipped ?

    The SAP error message STC_TM020 indicates that a specific task in a task list is mandatory and cannot be skipped. This error typically occurs when you are trying to execute a task list in the SAP system, and one of the tasks that is required for the successful execution of that task list is missing or has been marked as skipped.

    Cause:

    1. Mandatory Task Missing: The task that is being referred to in the error message is a mandatory task that must be executed as part of the task list.
    2. Task Configuration: The task list may have been configured incorrectly, or the mandatory task may not have been properly defined.
    3. Execution Order: The task may depend on the successful completion of previous tasks, and if those tasks are skipped or failed, it can lead to this error.

    Solution:

    1. Check Task List Configuration: Review the configuration of the task list to ensure that all mandatory tasks are included and correctly defined.
    2. Execute Mandatory Task: Identify the specific task mentioned in the error message (denoted by '&1') and ensure that it is executed as part of the task list.
    3. Review Dependencies: Check if there are any dependencies that need to be fulfilled before executing the mandatory task. Ensure that all prerequisite tasks are completed successfully.
    4. Consult Documentation: Refer to the SAP documentation or help resources for the specific task list you are working with to understand the requirements and dependencies.
    5. Contact Support: If you are unable to resolve the issue, consider reaching out to your SAP support team or consulting with SAP support for further assistance.

    Related Information:

    • Transaction Codes: You may want to use transaction codes like ST22 (Dump Analysis) or SM21 (System Log) to check for any related errors or issues in the system logs.
    • Task List Management: Familiarize yourself with the task list management in SAP, including how to create, modify, and execute task lists.
    • SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance related to the error message STC_TM020.

    By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.

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