SAP Gateway Components in SAP NetWeaver Application Server ABAP 7.00 - 7.31
To simplify your SAP Gateway landscape, and because several of the SAP Gateway add-ons will not be supported by SAP S/4HANA, you now have the option to uninstall the following SAP Gateway add-ons:
- IW_SCS 200
- IW_CNT 200
- IW_CBS 200
- IW_GIL 100
- IW_SPI 100
In the figures, SAP Gateway Components in SAP NetWeaver Application Server for ABAP 7.00 - 7.31 and SAP Gateway Components since SAP NetWeaver Application Server for ABAP 7.40, these uninstallable add-ons have been marked in orange.
The GW_CORE, IW_FND, IW_BEP, and IW_HDB add-ons are not uninstallable because their content became part of the software component SAP_GWFND, which is part of SAP Basis as of SAP NetWeaver 740.
The IW_BEP add-on supports the generation of OData services based on the following:
- BAPIs
- RFC function modules
- Business Warehouse (BW) content including MDX, easy query, and OData query (as of 7.40)
- Business workflow

SAP Gateway consists of several add-ons. Some of them are mandatory, while others are only optional and some are even legacy. You can find a complete list of SAP Gateway add-ons in the SAP Online Help Installing SAP Gateway Components → SAP Gateway → SAP Library.
So far, all of the add-ons mentioned have to be maintained and upgraded in a customer system landscape once you have installed them because it was not possible to uninstall SAP Gateway add-ons in the past. In a worst-case scenario, you could have up to 10 SAP Gateway add-ons installed in your SAP Gateway hub and SAP Business Suite back end.
Further Integration Support
There are additional add-ons available that support further integration scenarios. These include the following:
- The Generic Interaction Layer (GenIL)
GenIL is a layer connecting the business object layer (BOL) model to the appropriate database tables in the SAP Business Suite system. A new software component, IW_GIL, has been created with dependencies on IW_BEP and WEBCUIF 700. It allows the integration of GenIL. Due to technical restrictions identified with the GenIL RFC APIs, only the local GenIL APIs are used.
- SPI
The Service Provider Infrastructure (SPI) is a layer for business data exposure that is independent of application and UI technology. It is used across the entire SAP Business Suite to build timeless software. It works as the backbone for different feeder technologies like user interface building block (UIBB) components, personal object worklist (POWL) components, and Adobe Forms, and it offers Floorplan Manager (FPM) integration. Many applications in various areas of SAP Business Suite use SPI.
The integration for SPI in SAP Gateway based on the add-on IW_GIL means you can potentially enable content that is already built using SPI on the SAP Business Suite system.
RFCs delivered with SPI will be used by the integration scenario.
- IW_PGW (Process Gateway)
The IW_PGW add-on contains the functionality of the Task Gateway Service, which enables access to all SAP Business Workflow items in all connected back-end systems. It is also possible to leverage BPM and third-party workflow items. To integrate BPM, you require SAP NetWeaver 7.31 SP05 or higher.
- SAP HANA
SAP HANA is a product based on New DB that allows for the implementation of analytical applications that process a huge amount of data in real-time.
The following different types of models, which can be created in SAP HANA DB, can be leveraged via SAP Gateway add-on IW_HDB:
- Attribute View — A reusable dimension or subject area used for business analysis.
- Analytic View — A multi-dimensional view or OLAP cube. Using analytic views, you analyze values from a single fact table that is based on the related attributes from the data foundation and attribute views.
SAP Gateway Components for SAP NetWeaver Application Server ABAP 7.40 - 7.50
An SAP Business Suite powered by SAP HANA back end running on top of SAP NetWeaver 7.40 can either be used for embedded deployment or it can act as a back-end system for a standalone SAP Gateway hub.