If you sell cheese, cold cuts, bulk goods or meals by weight, you weigh the item and stick on a barcode label. That code changes with every weighing — because the weight (or the price) is written inside it.

That's why it never matches the code registered on the product. Jarbas knows this: it reads what's inside the label, finds the product and adds the right quantity to the cart.

You just scan.

What needs to be right

1. The product must be set to Fraction

On the product record, under Sell By, choose Fraction. If it's set to Unit, Jarbas won't treat the label as a scale label.

2. The product code must match the scale's

In the product's Code field, enter the same number that identifies the item on your scale. Don't worry about leading zeros: Jarbas tries it both ways.

3. The registered price must be the price of the selling unit

If you sell by the kilo, the sale price in Jarbas is the price per kilo.

4. Tell Jarbas what your scale prints

Go to Configurations › Orders and Sales › Scale barcode content and pick Weight or Price.

Weight or Price: how to tell

Looking at the barcode won't tell you which one is inside — both are just digits. You're the one who knows.

Weigh a product and look at the label:

• If the last digits of the code look like the weight in grams (750 g → 00750), your scale prints Weight.
• If they look like the amount payable in cents ($18.75 → 01875), your scale prints Price.

If in doubt, pick one, scan a label and see what lands in the cart. If the quantity is absurd, it's the other one.

What changes between the two

Weight — Jarbas takes the weight from the label and multiplies it by your sale price. Round quantity, total calculated by Jarbas.

Price — the label already says what to charge. Jarbas divides that amount by your sale price to get the quantity, without rounding.

So in Price mode, quantities like 0.987 are normal. That's deliberate: rounding would drift the item total away from the amount printed on the label, and that printed amount is what the customer is looking at.

If quantities always come out odd, it's a sign the price on the scale and the price in Jarbas don't match. Line them up.

Which labels Jarbas reads

Codes starting with 2 — the digit 2 is reserved by the standard for in-store use, and it's what retail scales use. Applies to EAN-13 (13 digits) and UPC-A (12 digits).

Since each manufacturer arranges the digits its own way, Jarbas tries the common layouts until one resolves to a product of yours sold by fraction.

GS1 labels (GS1-128 and DataBar) — used by larger scales and industry. These state within themselves whether they carry net weight or amount payable, so they're read exactly as printed, regardless of the Weight/Price setting.

"Product not found" when scanning

Check, in this order:

1. Is the product set to Sell By: Fraction?
2. Is the product's Code the same number programmed on the scale?
3. Does the printed code start with 2?
4. Is the product active and not deleted?

If everything checks out and it still doesn't work, type the product code into the search on the sales screen: if it shows up, the problem is in the label; if it doesn't, it's in the product record.