Make the counter part of the whole business.

Product codes, barcodes, units and pricing need consistent definitions before a billing flow can work well. Identify weighed items, variations or bundled products early. Importing a catalogue requires review of the data, not just a file upload.

A counter workflow includes price checks, payment recording, receipt output and corrections. Returns, cancellations and permitted discounts need clear rules and permissions. The team should rehearse these exceptions alongside a straightforward sale before the system is used with customers.

Sales, returns, receipts and adjustments affect stock differently. Agree which transactions change quantities and how corrections are recorded. When several outlets are involved, transfers and outlet-level visibility need a defined process to avoid misleading availability reports.

Receipt printers, barcode scanners and other devices must be assessed against their actual interfaces. Offline billing and later synchronisation require explicit design and testing; they should not be assumed. Use the store’s real equipment and connectivity conditions during acceptance.

End-of-day totals, payment reconciliation and staff responsibilities need to match the retailer’s process. Tax settings and invoice requirements should be confirmed by the business. Software configuration, hardware purchases, migration and support belong in separate parts of the proposal.