Forum Discussion
kumar25 - The dev team has informed me that the Excel Parser only supports XLS and XLSX formats today. So requesting support for XLSB would be an enhancement request, which would need to be evaluated and prioritized according to the number of customers impacted and weighed against other priorities.
So I would recommend that you research Java or Python libraries that can parse the files that you are trying to source, then look at how to implement that with the Script so it can be called within your pipeline.
Hope this helps!