Tree Mode in Oracle Business Rules 11g

I was struggling sometime last week with an issue in using the "Tree Mode" option in the decision table of a dictionary in Oracle Business Rules 11g (OBR). I selected the tree mode option in the decision table and selected the root for the tree mode also. I configured my decision table as required and that did not have any errors. However, there was some error in dictionary validation like:

RUL-05162: The rule set "ACU" requires fact type "ServiceType", but this type is not part of the input.
TEST/Data Model/Decision Function(TEST_DecisionService_1)
RUL-05162: The rule set "UCS" requires fact type "ServiceType", but this type is not part of the input.
TEST/Data Model/Decision Function(TEST_DecisionService_1)
RUL-05162: The rule set "AMB" requires fact type "ServiceType", but this type is not part of the input.
TEST/Data Model/Decision Function(TEST_DecisionService_1)
RUL-05162: The rule set "ALG" requires fact type "ServiceType", but this type is not part of the input.
TEST/Data Model/Decision Function(TEST_DecisionService_1)
RUL-05164: The fact type "ServiceType" is referenced, but is not asserted nor input.
TEST/Data Model/Decision Function(TEST_DecisionService_1)

Then I found that the tree mode option had to be selected in the decision function also. If a dictionary makes a call to another dictionary which uses the tree mode option, the dictionary that is making the call should also have the tree mode option chosen !

The selection of tree mode option in the decision table is available in OBR Users Guide (section 4.8). However, check the option in the decision function as below:

Peace !

Cheers,
-AR