Field help (MISRULSTD) 

Help common to purchase and sales invoicing elements.

This information is used at invoice level, only when the DEPMGTMOD - Early discounts management mode parameter is set to 'Tax discounts' or 'Discount on tax (exempt)/Global' (for this last value: update 8.0.0 and higher).

When this box is checked, the invoicing element can be associated to a discount code In this case, the discount is carried out on the VAT, without affecting the tax excluding amounts.

The discount on tax operates like an early discount.
On the sales invoice, this invoicing element neither appears in the invoicing element grid (invoicing tab), nor in the invoice valuation grid. Only the bases subject to the taxes of VAT type are decreased.

The discount calculation is carried out in the tax grid and in the invoicing element grid where it decreases the base subject to all the main taxes.

In the case of a document which is entered tax excluded, only the tax is impacted by this type of invoicing element. When the document is entered tax-included, the tax included amount is also impacted by the discount on tax.

No tax rule, accounting code or analytical dimension can affect this invoicing element because only the total invoice amount and the VAT accounts are impacted.