Hello @timothytok ,
Just to confirm, are you talking about the IBM SPSS Modeler, right?
If so, there's a plugin available that basically will allow you to import the .sav file, so at the end Dataiku DSS can understand the data provided.
Below there's the link with the little procedure and within it, you will find the link to download the zip package depending on your DSS version:
Hope this information helps and I hope you have a nice day there!