Incorrect Barcode Scanned Adjuster
When staff scan (or multiply) one product instead of ringing up each item in a mixed sale, it's quicker at the till but leaves stock records wrong. Group the products that regularly get mixed up, log each mix-up as it's noticed, and this works out the stock correction each product needs — including untangling it across more than two products at once.
About this tool
A positive stock adjustment means add that many units back onto the stock record (the till over-deducted that product); a negative adjustment means deduct further units (the till under-deducted it, because it left the shop but was never rung in). With just two products in a group this is usually an obvious +N / -N pair. With more than two, the stocktake gap reconciler pairs off the largest gaps first as a plausible explanation — flagged clearly as a suggestion, not a certainty — and shows what's left once mix-ups are accounted for, which may be genuine shrinkage, miscounting, or theft worth investigating further. Everything is saved to this browser only (localStorage); use Export JSON regularly as a backup, especially across more than one device.