Refund amount does not match the invoice

[ednukros]

Hi,

Could someone tell me why when a partial return is made on an order in which a promotional coupon discount was included, the amount of the return does not match the amount on the return invoice?Example: on the return invoice the amount returned without VAT is: €91.79 and in the database, in the table: ps_order_slip, the total_products_tax_excl=€90.93

 

Thanks!!

Edited January 11 by ednukros (see edit history)