Quick answer
Barcode errors usually mean the current workflow expected a different kind of barcode, the item belongs somewhere else, or the unit has already been processed.
Start by confirming the workflow you are in and the barcode type that screen currently expects.
Know the barcode types
LaSyncro workflows can use:
- supplier or product barcodes, such as EAN, UPC, GTIN, SKU, or a linked product identifier;
- LSU- barcodes for physical LaSyncro warehouse units;
- LSO- barcodes for order and invoice scanning;
- warehouse location barcodes;
- PROB- labels for problem handling.
PROB labels are not normal product scan barcodes.
Receiving scans
Receiving supports Inspection count and Scan mode.
Scan mode is available when usable product or supplier barcodes are available for the purchase order lines.
If a receiving scan is not recognized, confirm that:
- the barcode belongs to a product in the current purchase order;
- the product has barcode data in LaSyncro;
- the line is not already fully confirmed;
- the screen is in Scan mode rather than count mode.
Stowing scans
Stowing is location-first.
Scan or enter the destination bin before scanning units.
After a bin is active, each successful unit scan places one physical unit.
If stowing rejects a scan, confirm that:
- the bin barcode is recognized and active;
- the bin can receive inventory;
- the unit matches the stow task;
- the LSU label is still tied to a unit waiting to be stowed.
Picking scans
Picking is also location-first.
Scan or enter the expected location, then scan the product or unit barcode.
Current Pick uses scanner input or manual text entry with Enter. Do not expect camera scanning in Pick.
If Pick says the location or item is wrong, check that you are at the expected bin and scanning the item shown in the pick step.
Packing scans
Pack mode expects LSU item barcodes first.
After all items in an order are confirmed, scan the LSO invoice barcode to close the parcel.
If Pack rejects a barcode, confirm that:
- the value starts with LSU- or LSO-;
- the unit belongs to the current order;
- the invoice belongs to the current order;
- all items were scanned before the invoice barcode;
- the unit was not already packed.
Return scans
Shipped LSU or LSO scans can enter return processing through the current Warehouse Pack-mode scan flow.
Inside return processing, the manual return-line flow can accept product barcode input where supported.
If a return scan is not recognized, confirm that the shipment was already processed and that you scanned the order, unit, or product barcode expected by the current return screen.
Use manual entry where available
Several warehouse scan fields allow typing the barcode and pressing Enter or choosing Scan.
Use manual entry to separate scanner hardware issues from barcode-data issues.
If typed entry works, check the scanner, focus, and physical label.
If typed entry fails with the same message, review the product, unit, order, or location record.
Permission and claim errors
Not every scan problem is a barcode problem.
If the message says another operator or packer already claimed the job, treat it as a workflow ownership issue.
If the message says you do not have access, ask an Owner to review your role or plan access.