To use Task Gateway, you must first ensure that your system landscape includes the relevant SAP Gateway components.
If your system landscape is based on SAP NetWeaver 7.0, 7.01, 7.02, 7.03 or 7.31, you must first install the components IW_PGW and IW_BEP in your SAP Gateway system.
If your system landscape is based on SAP NetWeaver 7.40 or higher, it contains the core SAP Gateway component SAP_GWFND as standard and, as such, you do not need to install IW_BEP in your SAP Gateway system. However, you must install the component IW_PGW.
For more information about setting up your system landscape for SAP Gateway, see Deployment Options