The official  rule is:


Charge penalty fee 

1.  Per Pricing Unit

2.  Per Transaction

3.  The most restrictive


Changes exceptions within one and the same Pricing Unit:


1.  This rule applies
per Fare Component  

     -   Charge the penalties of the changed fare component.

     -   Charge the highest when more than one fare component is changed in the same transaction.  

2.  
Per Direction charge Eur. 50.00 for reissue
      -   Charge the penalties of the changed fare component.

      -   Charge two times the highest penalties when two fare components are changed in the same transaction. 

          The total number of the changed fare components: three times when three fare components, etc.

3.  
Per Leg  -  consider as  'Per Direction'


4.   Per Sector -  consider as  'Per Direction'


5.  
Per one way -  consider as  'Per Direction'


6.   Per Flight Segment charge Eur. 80.00 for reissue                                                 
      -   Charge per flight segment: the total number of changed flight segments


7.   Per Coupon  - consider as 'Per Flight Segment' 


**    More exceptions possible !!