minRequiredVersionType Simple Type

The minRequiredVersionType simple type specifies the format of the minimum client version that can implement the rule. Attributes of type minRequiredVersionType take the form of 4 16-bit integers separated by periods. The first integer MUST be present. The last three integers SHOULD be present.<58>

 <xs:simpleType name="minRequiredVersionType">
   <xs:restriction base="xs:string">
     <xs:pattern value="[0-6]?[0-9]{1,4}(\.[0-6]?[0-9]{1,4}){0,3}"/>