OData Channel Configuration 
Depending on your underlying SAP NetWeaver release the configuration settings for OData Channel and the structure in the Implementation Guide (IMG) may differ.
SAP NetWeaver 7.00 and 7.01
The OData Channel configuration settings are available in the Implementation Guide (IMG) in the system where software component IW_FND is deployed. In the SAP Reference IMG navigate to 
SAP NetWeaver 
Gateway 
.
(OData Channel IMG for IW_FND in 7.00 and 7.01)
SAP NetWeaver 7.02 and 7.31
The OData Channel configuration activities are listed in the Implementation Guide (IMG) in the system where software component IW_FND is deployed. In the SAP Reference IMG navigate to SAP NetWeaver Gateway OData Channel .
(OData Channel IMG in IW_FND)
Recommendation
We strongly recommend using the OData Channel (ODC) programming paradigm for all SAP NetWeaver Gateway development.
As of SAP NetWeaver Gateway 2.0 Support Package 05, you are strongly recommended to use the Service Builder (transaction SEGW) for your OData design-time development . For more information, see SAP NetWeaver Gateway Service Builder.
Depending on whether you want to develop SAP NetWeaver Gateway content in an SAP Business Suite backend system or in an SAP NetWeaver Gateway hub system, you can choose between embedded deployment or central hub deployment. For more information, see Embedded Versus Hub Deployment and Deployment Options.
Apart from basic configuration settings the OData Channel configuration activities for the SAP Business Suite backend system are listed in the Implementation Guide (IMG) in the backend system where software component IW_BEP is deployed. In the SAP Reference IMG navigate to SAP NetWeaver Gateway Service Enablement Backend OData Channel .
(OData Channel IMG in IW_BEP)
SAP NetWeaver 7.40
If you use software component SAP_GWFND in SAP NetWeaver 7.40, IMG activities for SAP NetWeaver Gateway Foundation 7.40 are available. In the SAP Reference IMG navigate to SAP NetWeaver Gateway and SAP NetWeaver Gateway Service Enablement . There you find all the relevant OData Channel IMG activities.