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Element does not carry attribute

An attribute declared #REQUIRED in the DTD is missing.

The message, as the validator reports it
Element note does not carry attribute id

Why it happens

  • The attribute was left out or misspelt.

How to fix it

Add the attribute. For an ID attribute the value must be a name (it may not start with a digit) and unique in the document.

Example

Validated against note.dtd, below.

Reports the error
<note>
  <to>Ana</to>
  <body>Hi</body>
</note>
Fixed
<note id="n1">
  <to>Ana</to>
  <body>Hi</body>
</note>
note.dtd 
<!ELEMENT note (to, body)>
<!ELEMENT to (#PCDATA)>
<!ELEMENT body (#PCDATA)>
<!ATTLIST note id ID #REQUIRED>