I have two entities in the database, one that has a content 'rows' and another one that is empty 'storedmonthly'. I want to put the content of the entity rows in the entity storedmonthly, I tried to create a list storedmonthly, retrieve rows and add to list storedmonthly the retrieved list rows but I get this error.
So here your object is rows and target object is storedMonthly. In the java action choose Source object as rows & Traget object as storedMonthly. Hope it helps!