Topic: Bug Found in Supplier Invoice in Calculating Unit Tax
purchasing/includes/db/invoice_db.inc
Line # 276
The 3rd arugment is 0 but it should be $supp_trans->tax_group_id. Therefore it should be look like
$line_tax = get_full_price_for_item($entered_grn->item_code,
$entered_grn->this_quantity_inv * $entered_grn->chg_price, $supp_trans->tax_group_id, $supp_trans->tax_included) - $taxfree_line;
Otherwise the unit_tax is not calcuated correctly because
finally the function get_tax_group_rates is not reurning the rates to calculated the full_price_of_item() on above mentioned line.