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How To Fix ST_BUILDER_MESSAGES028 - Illegal XML-token name "&1"


SAP Error Message - Details

  • Message type: E = Error

  • Message class: ST_BUILDER_MESSAGES - Short texts for the ST-Builder

  • Message number: 028

  • Message text: Illegal XML-token name "&1"

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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 ST_BUILDER_MESSAGES028 - Illegal XML-token name "&1" ?

    The SAP error message ST_BUILDER_MESSAGES028, which states "Illegal XML-token name '&1'", typically occurs when there is an issue with the XML structure or content being processed in the SAP system. This error indicates that the XML parser has encountered a token (element or attribute name) that does not conform to the XML naming rules.

    Causes:

    1. Invalid Characters: The token name may contain illegal characters that are not allowed in XML names, such as spaces, punctuation marks, or special characters.
    2. Incorrect Formatting: The XML structure may be incorrectly formatted, leading to parsing issues.
    3. Reserved Keywords: The token name might be using a reserved keyword or a name that conflicts with XML standards.
    4. Encoding Issues: There may be issues with character encoding that result in invalid characters being interpreted in the XML.

    Solutions:

    1. Check XML Structure: Review the XML document for proper structure and ensure that all tags are correctly opened and closed.
    2. Validate Token Names: Ensure that all element and attribute names conform to XML naming rules:
      • Names must start with a letter or underscore.
      • Names can contain letters, digits, hyphens, underscores, and periods.
      • Names cannot contain spaces or special characters.
    3. Use XML Validators: Utilize XML validation tools or online validators to check the XML for errors and ensure it adheres to the XML standards.
    4. Review Encoding: Ensure that the XML document is saved with the correct encoding (e.g., UTF-8) and that there are no hidden characters.
    5. Debugging: If the XML is generated programmatically, review the code that generates the XML to ensure it constructs valid names.

    Related Information:

    • XML Naming Rules: Familiarize yourself with the rules for naming elements and attributes in XML to avoid similar issues in the future.
    • SAP Documentation: Consult SAP documentation or forums for specific guidance related to the context in which the error occurs, as it may be related to a specific module or function.
    • SAP Notes: Check for any relevant SAP Notes that may address this error or provide additional troubleshooting steps.

    If the issue persists after following these steps, consider reaching out to SAP support or consulting with a developer who has experience with XML and SAP integration.

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