Managing Tax Calculation Services
"System Managers" use the Services section to activate the appropriate tax calculation service (depending on the selected price type) using the preconfigured service configurations. For general information about tax calculation services, see Tax Calculation Services.
The default, preconfigured configurations for the tax calculation services are defined in the organization management context and shared with all dependent management contexts (channels and applications). That is, the appropriate service needs to be made available on the organization level and activated on all dependent levels.