The unsignedShort data type is derived from the unsignedInt type. : unsignedShort « XML Schema « XML Tutorial

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3. unsignedShort

The value space is the set of integers greater than or equal to 0 and less than or equal to 65535. 
The lexical space is a finite-length sequence of decimal digits.

<!-- schema -->
<xsd:element name="shortstop">
  <xsd:simpleType>
   <xsd:restriction base="xsd:unsignedShort">
    <xsd:enumeration value="15515"/>
    <xsd:enumeration value="38860"/>
   </xsd:restriction>
  </xsd:simpleType>
</xsd:element>
<!-- instance document -->
<shortstop>38860</shortstop>