When doing a pivot transformation from a database all seems to work correctly when viewing the data. The correct columns are shown, however when looking at the metadata fields not all columns are shown (only 2 of them). When turning on the automatic columns numeration I can see a lot of columns being added but then I get a list of columns like APC1001, APC1002, APC1003, APC1004, ...
I don't get any errors in knowage nor in the logging, any idea on how to fix this?

Thanks in advance.