SAP Gateway license for SAP Business Suite named user license

Hi,

We are running SAP ERP 6.0 EHP7.with named user license.

Now, I want using SAP Gateway (OData) through Excel for read/write data. Whether additional license are needed for that purpose?

How about license if I am using another non SAP applications besides Excel for access (read/write data) using SAP Gateway (OData).

Best regards,

Andy Pataselano