We use the Excel Importer Module to import data into Mendix. We import an object with multiple relation, e.g. contract with relation to contract type (which is a separate object, not an enumeration) and contact person. In case the contract is imported with a new contract type in fact I would like to have it fail, but that does not seem to be possible. But at least I would like to know that a new contract type is added to the contract type object and show that directly to the user that is importing. If I read the documentation it looks possible: 4.4.1 Print Statistics & Not Found Messages These control which kinds of messages are printed on the application console But turning it to true, does not have any effect. So, I can only retrieve this information if I turn Replication_MetaInfo_AssociatedObjects to Trace in the log settings. Am I missing something?