We currently have our SAP PI/PO systems running on Netweaver 7.5 with a Hana database backend. We are getting rid of our on-premise Hana installations because we are moving to Business Suite to S4 on RISE. We will still have our PI/PO system on premise for a couple of years. We want to move PI/PO Netweaver 7.5 from running on Hana to running on a different database. Is it free to run MaxDB with Netweaver 7.5 in this configuration?