How To Fix /SAPDMC/LSMW_OBJ_020001 - Characters permitted: A-Z, 0-9, '-', '_'. First character: A-Z


SAP Error Message - Details

  • Message type: E = Error

  • Message class: /SAPDMC/LSMW_OBJ_020 -

  • Message number: 001

  • Message text: Characters permitted: A-Z, 0-9, '-', '_'. First character: A-Z

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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.

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Smart SAP Assistant

  • What is the cause and solution for SAP error message /SAPDMC/LSMW_OBJ_020001 - Characters permitted: A-Z, 0-9, '-', '_'. First character: A-Z ?

    The SAP error message /SAPDMC/LSMW_OBJ_020001 indicates that there is an issue with the naming convention of an object in the LSMW (Legacy System Migration Workbench) process. Specifically, the error message states that the characters permitted for the object name are limited to uppercase letters (A-Z), numbers (0-9), hyphens (-), and underscores (_), and that the first character must be an uppercase letter (A-Z).

    Cause:

    The error is typically caused by one of the following:

    1. Invalid Characters: The object name you are trying to use contains characters that are not allowed (e.g., lowercase letters, special characters, spaces).
    2. Incorrect Starting Character: The object name does not start with an uppercase letter (A-Z).
    3. Length Restrictions: The object name may exceed the maximum length allowed by SAP.

    Solution:

    To resolve this error, you should:

    1. Check the Object Name: Ensure that the object name you are trying to create or use adheres to the naming conventions specified in the error message.
      • Use only uppercase letters (A-Z), numbers (0-9), hyphens (-), and underscores (_).
      • Ensure that the first character is an uppercase letter (A-Z).
      • Avoid using any spaces or special characters.
    2. Modify the Name: If the object name is invalid, modify it to comply with the naming rules. For example:
      • Change my_object1 to MY_OBJECT1
      • Change object-1 to OBJECT_1
    3. Check Length: Ensure that the object name does not exceed the maximum length allowed by SAP (usually 30 characters for many object types).

    Related Information:

    • SAP Documentation: Refer to the official SAP documentation for LSMW and naming conventions for objects to understand the specific requirements.
    • SAP Notes: Check for any relevant SAP Notes that may provide additional context or solutions related to this error.
    • Testing: After making the necessary changes, test the LSMW process again to ensure that the error is resolved.

    By following these steps, you should be able to resolve the error and successfully create or use the object in LSMW.

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