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ErrorLib — Industrial Fault Code Library

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XML_TAGMATCH

End tag with no matching start

Fanuc · R-30iA R-30iB Controller

What does XML_TAGMATCH mean?

This error means an XML end tag was encountered without a corresponding opening tag. This indicates an imbalance in the XML document structure, preventing proper parsing and hierarchical understanding of the data.

Common Causes

  • An XML end tag (e.g., </tag>) is present without a corresponding opening tag.
  • A nesting error in the XML structure where a closing tag is unpaired.
  • The configuration file has an incomplete or malformed XML structure.
  • A deletion or modification error in the XML file leading to a missing start tag.
  • The parser detects an imbalance in the tag hierarchy.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Add the missing opening tag for the encountered end tag in the configuration file.

  2. 2

    Ensure that every XML element has a corresponding start and end tag.

  3. 3

    Verify the hierarchical structure of the XML file for correct nesting.

  4. 4

    Review the XML file for matching pairs of <tag> and </tag>.

  5. 5

    Use an XML validator to identify and correct the unbalanced tags.

Browse all codes in this manual (31)
Verified technical data. Last updated: April 2026

Related Faults

12328File is not opened12329Cannot write the variable12330Write file failed
Source: Fanuc R-30iA R-30iB Controller
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