How To Fix /CCIS/TAX667 - Element name in XSD is not defined

/CCIS/TAX667 - Overview

• Message type: E = Error

• Message class: /CCIS/TAX -

• Message number: 667

• Message text: Element name in XSD is not defined

Self-Explanatory Message

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/CCIS/TAX667 - Details

• The SAP error message /CCIS/TAX667 Element name in XSD is not defined typically occurs in the context of SAP's Convergent Charging or Convergent Invoicing solutions, particularly when dealing with XML Schema Definitions (XSD) for data exchange. This error indicates that there is an issue with the XML structure being processed, specifically that an element referenced in the XML does not have a corresponding definition in the XSD file.
  Causes:
  
  Missing Element Definition: The XML being processed references an element that is not defined in the XSD schema. This could be due to a typo in the XML or an oversight in the XSD.
  Version Mismatch: The XML might be using a newer or older version of the schema that does not match the XSD being used for validation.
  Incorrect Namespace: The XML might be using the wrong namespace, which can lead to elements not being recognized.
  Schema Changes: If the XSD has been updated or