Thank you Alessandro. That worked.
All needed to do was regenerate and activate the MSMP.
Now however I have another error. When I try to click "Provision Manually" button I get error message.
Assignment XXXXX could not be provisioned successfully because Correctly define the scenario handler in class CCI.
XXXXX is the name of the logical connector for non-sap system we using for manual provisioning which has been configured with legacy connection.
Do you know why this occurs?