Throw compilation error when using collect hit policy with aggr. function and multiple outputs ---------------------------------------------------------------------------------------------- Key: DROOLS-1612 URL: https://issues.jboss.org/browse/DROOLS-1612 Project: Drools Issue Type: Bug Components: dmn engine Affects Versions: 7.0.0.Final Reporter: Tibor Zimányi Assignee: Edson Tirelli According to the DMN spec., "Decision tables with compound outputs support only the following hit policies: Unique, Any, Priority, First, Output order, Rule order and Collect without operator, because the collect operator is undefined over multiple outputs." However when I use decision table with "COLLECT" hit policy, "sum" aggregate function and multiple outputs, the table compiles. When evaluating the table, I get nulls as output value results, but no error message in DMNResult. I will provide a reproducer in a PR.