Sign in Open validatorValidator

cvc-datatype-valid.1.2.1: Is not a valid value for

A value is not in the format of its XML Schema datatype.

The message, as Java reports it
cvc-datatype-valid.1.2.1: 'two' is not a valid value for 'integer'.

Why it happens

  • A number with a decimal comma, a thousands separator or a unit, where the schema expects xs:decimal or xs:int.
  • A date in a local format: xs:date is 2026-10-17, xs:dateTime is 2026-10-17T09:30:00.
  • An empty element for a numeric or date type, or a boolean written as yes (xs:boolean takes true, false, 1 or 0).

How to fix it

Write the value in the datatype's format. Xerces names the built-in type it checked against, which can be the base of the declared one: integer here for an element declared xs:int. The next message, cvc-type.3.1.3 or cvc-attribute.3, names the element or attribute that holds the value.

Java's schema validation (javax.xml.validation.Validator, and JAXB or Spring on top of it) throws at the first error unless you set an ErrorHandler whose error() records the SAXParseException and carries on; each one has getLineNumber() and getColumnNumber(). A well-formedness error ends parsing whatever the handler does.

The same problem in xmlvalid

xmlvalid validates with libxml2, which reports it as Is not a valid value of the atomic type. It checks the whole document in your browser and lists every schema error with its line and column, not only the first.

Element 'qty': 'two' is not a valid value of the atomic type 'xs:int'.

Example

Validated against order.xsd, below.

Reports the error
<order currency="EUR">
  <id>A-1</id>
  <qty>two</qty>
</order>
Fixed
<order currency="EUR">
  <id>A-1</id>
  <qty>2</qty>
</order>
order.xsd 
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:element name="order">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="id" type="xs:string"/>
        <xs:element name="qty" type="xs:int"/>
        <xs:element name="status" type="Status" minOccurs="0"/>
        <xs:element name="code" type="Code" minOccurs="0"/>
        <xs:element name="note" type="Short" minOccurs="0"/>
      </xs:sequence>
      <xs:attribute name="currency" type="xs:string" use="required"/>
    </xs:complexType>
  </xs:element>
  <xs:simpleType name="Status">
    <xs:restriction base="xs:string">
      <xs:enumeration value="open"/>
      <xs:enumeration value="paid"/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name="Code">
    <xs:restriction base="xs:string">
      <xs:pattern value="[A-Z]{3}-[0-9]{4}"/>
    </xs:restriction>
  </xs:simpleType>
  <xs:simpleType name="Short">
    <xs:restriction base="xs:string">
      <xs:maxLength value="10"/>
    </xs:restriction>
  </xs:simpleType>
</xs:schema>