From feature note below we know that: You can now retrieve and transform data from SAP CDS views using the tSAPTableInput and tELTSAPMap components. The feature allows you to customize CDS view parameters as needed. Because the SAP API only supports retrieving data from one CDS view at a time, this feature does not support data extraction from multiple CDS views joined together.
Do we have a workaround to achieve the joint data extraction?
Ref: Data Integration | Talend Release Notes Help