Settings Multi-store

Line 120

define("Magento_Store_Code_To_Service","english"); // default -ALL-, which retrieves from all stores on the Magento system

We have 3 stores, each with 5 languages. Under Website Name, there are Main Website (Code:base), German Website (Code:german) and Swiss Website (Code:swiss)

Under Store View Name

For Main Website (Code:base), we have DE (Code:german_usd), EN (Code:english), IT (Code:italy_usd), FR (Code:france_usd) and ES (Code:spanish_usd)

As you can tell already, only 'English' sales are coming into ShipRush.

for Line 120, why cannot (Code:base) 'base' be used?