Business Add-Ins may be implemented on the basis of a filter value. If an enhancement for country-specific versions is provided for in the standard version, it is likely that different partners will want to implement this enhancement. The individual countries can create and activate their own implementation.
Enter a filter type when defining your enhancement (a country or industry sector, for example). All methods created in the enhancement's interface have filter value FLT_VAL as their importing parameter. The application program provides the filter value for the enhancement method. The method then selects the active implementation for that value.