On entry of BP invoices or of journals, the tax code retained is the one mentioned in the tax rule table, or, by default, the one of the EXETAX parameter value.
It remains possible to modify this value manually.
Note: this functionality has no impact on purchase or sales where the tax code is defined based on the "rule/item tax level" combination.
This parameter is defined at the level Company.It belongs to Chapter CPT (Accounting) and the Group VAT (Tax management),The following parameters are also associated with this chapter and group :
The global variable GSAITAX is associated with it.