Text by sender referenced message class such as PRICAT, ORDERS, ORDRSP, DESADV, INVOIC etc.
COMEVE_Required
              No
          COMEVE_Examples
               <communicationEvent messageClass="INVOIC"> COMEVE_Xpath
              /b24Message/communicationEvent/@messageClass
          COMEVE_Type
              Text
          COMEVE_Sort
              1100
          COMEVE_Id
              2
          