OptionGroup 

Defines information about the option details. An option can be defines
either with a duration and a reference or a date

Attribute Group Information

Attributes

QName Type Fixed Default Use Inheritable Annotation
CountingFrom DateDurationStartCodeType optional
Unit DurationUnitCodeType optional
Value DateOrDurationType optional

Used By

Complex Type OptionType

Source 

<xs:attributeGroup name="OptionGroup">
  <xs:annotation>
    <xs:documentation>Defines information about the option details. An option can be defines either with a duration and a reference or a date</xs:documentation>
  </xs:annotation>
  <xs:attribute name="Unit" type="DurationUnitCodeType" use="optional"/>
  <xs:attribute name="Value" type="DateOrDurationType" use="optional"/>
  <xs:attribute name="CountingFrom" type="DateDurationStartCodeType" use="optional"/>
</xs:attributeGroup>