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"

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 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:
  
  Invalid Characters: The token name may contain illegal characters that are not allowed in XML names, such as spaces, punctuation marks, or special characters.
  Incorrect Formatting: The XML structure may be incorrectly formatted, leading to parsing issues.
  Reserved Keywords: The token name might be using a reserved keyword or a name that conflicts with XML standards.
  Encoding Issues: There may be issues with character encoding that result in invalid characters being interpreted in the XML.
  
  Solutions:
  
  Check XML Structure: Review the XML document for proper structure and ensure that all tags are correctly opened and closed.
  Validate Token Names: Ensure that all element