The problem
The big order is the one nobody can reconstruct afterwards.
A counter sale is over in a minute and leaves a receipt. A corporate order runs for eleven weeks, passes through four people, and leaves whatever anyone happened to write down.
Week 1The customer asks for a quotation on forty machines. Somebody prices it from a supplier email and a memory of the last deal.
Week 2The customer haggles. A revised price goes over on WhatsApp. Nobody is certain afterwards which version was the one they accepted.
Week 3The order is placed with the distributor against a customer PO that has not actually arrived yet, because the salesman was confident.
Week 6Twenty-eight machines land. Twelve are back-ordered. The customer is invoiced for forty, because that is what the order said.
Week 11The invoice is queried, a credit note is raised, and the margin on the whole deal is now a number nobody wants to work out.
What it actually costsEleven weeks, four people, and no single version of the truth
The counter half of the business polices itself, because cash changes hands. The corporate half needs the paper trail to be the system rather than an afterthought.