CalculationGroup 

A given price can be added to another, or replace it (such as for
promotions, cancellation fees...), A code can be added to another one, or replace
it...

Element Group Information

Model

Calculation | Calculations
Children: Calculation, Calculations

Used By

Element Calculations
Element Group PriceRangeGroup
Complex Types FareBasisType, TourCodeType

Source 

<xs:group name="CalculationGroup">
  <xs:annotation>
    <xs:documentation>A given price can be added to another, or replace it (such as for promotions, cancellation fees...), A code can be added to another one, or replace it...</xs:documentation>
  </xs:annotation>
  <xs:choice>
    <xs:annotation>
      <xs:documentation>One or many</xs:documentation>
    </xs:annotation>
    <xs:element ref="Calculation"/>
    <xs:element ref="Calculations"/>
  </xs:choice>
</xs:group>