Either you or the administrator must create the channel and define its attributes in the Data Orchestration Engine (DOE). The administrator later assigns the channel to the receivers that in turn have to be subscribed to the channel.
You have logged onto SAP NetWeaver Mobile Administrator
More information: Logging On to SAP NetWeaver Mobile Administrator
...
1. Choose Administration → Device Management → Channel Administration.
2. Choose Create.
3. Enter the attributes of the channel.
More information: Determination of Channel Attributes
4. Choose Create.