Use a specific nShift Sender ID for shipments from a specific warehouse.
Each row connects:
a warehouse from the other system, and
an Nshift Sender ID.
Good to know
The sender ID is used for all shipments from the chosen warehouse.
If no match is found, Default Nshift Sender ID is used.
If the list is empty, check that the other system is connected. An empty list almost always means the connection, not the setting.