-(t.ov_amount + t.ov_gst + t.ov_freight + t.ov_freight_tax + t.ov_discount),
(t.ov_amount + t.ov_gst + t.ov_freight + t.ov_freight_tax + t.ov_discount))) AS amount,
dt.debtor_no, dt.name, dt.curr_code, b.receivables_account
-(t.ov_amount + t.ov_gst + t.ov_freight + t.ov_freight_tax + t.ov_discount),
(t.ov_amount + t.ov_gst + t.ov_freight + t.ov_freight_tax + t.ov_discount))) AS amount,
dt.debtor_no, dt.name, dt.curr_code, b.receivables_account