SAP BW InA API
SAP Information Access (InA) is the REST/HTTP JSON protocol SAP Analytics Cloud and SAP Analysis for Microsoft Office use to query SAP BW data sources in real time over a live connection. SAP documents the ICF service path and the individual services that must be active (BatchProcessing, GetCatalog, GetResponse, GetServerInfo, Logoff, ValueHelp) but publishes no specification for the protocol itself - it is proprietary and undocumented outside SAP.