From the SAP Business One Main Menu, choose
.Select either the Service Item or Service Document determination type.
Select values for the Key Field 1,2,3 fields.
For more information, see Tax Code Determination - Setup Window.
Select one row and choose the Key Field Value button.
The Key Field Value - Setup window appears.
For more information, see Key Fields Value - Setup Window.
Specify key field values.
Select one row and choose the Valid Period button.
The Valid Period - Setup window appears.
For more information, see Valid Period - Setup Window.
Specify valid periods.
To save your changes, choose the OK button, and then the Update button.