SAP Message CACSMD222 - There is already a commission contract for commission contract partner &

Diagnosis
A commission contract number already exists for the commission contractpartner selected by you and the standard contract number.
It is possible to create a further account for the selected commissioncontract partner. The contract partner gets a new commission contractnumber.

Procedure
INCLUDE ISIS_NA_INPUT OBJECT DOKU ID TX
Only continue the transactions if the desired action is viable. ChooseContinue.
If it does not, cancel the action.