Supplier invoices and purchase orders land in a shared inbox all day long — PDFs, scans, phone photos, and email bodies, arriving in dozens of different layouts because every supplier formats their paperwork their own way. Someone opens each one, finds the invoice number, the line items, the quantities, the unit prices, the VAT, and the total, and types all of it into the ERP by hand.
For a trading or distribution company moving real volume, that is hours a day of careful, repetitive keying — and it is the kind of work where attention slips. A transposed digit, a wrong tax line, a quantity that doesn't match what actually arrived at the warehouse: each one is a small error that becomes an expensive one downstream.
Then there is the check nobody enjoys but everybody needs: the three-way match. Before an invoice can be paid, it has to agree with the purchase order that authorised the spend and the goods receipt that confirms the goods actually came in. Done by hand, that means pulling up the PO, pulling up the delivery note, and comparing line by line.
When the match is skipped or rushed under a payment deadline, the company pays for goods it never received, pays a price higher than the PO agreed, or pays the same invoice twice. Every duplicate payment and every price overrun that slips through is margin that quietly leaves the business — on transactions that were supposed to be routine.