Lumira discovery 2.2 : combine SAP BW datasource and Excel file

Hello community,

I'm using lumira discovery 2.2 to connect to SAP BW.

I connect to SAP BW and select an infocube. The connexion works fine and I'm able to analyse BW data without importing them to Lumira. I'm working on a dataset of 50 Millions records.

Now I want to add a customer hierarchy using an Excel file that I want to merge to a BW dimension. However, I can't find a way to add a data from a datasource different from BW. Lumira allows me to add dataset only from BW datasource.

Can you give me a workaround ?

Thanks