1. Other guns have been scanned: If there are more than one gun in your warehouse, other guns have already scanned the bar code. When you scan with a new gun, the system will prompt that the product has been scanned.
2. Barcode error: If there is an error in the barcode of a commodity, such as duplicate or similar barcodes, Ba Gun will scan it repeatedly.
3. System data error: There may be errors or duplicate information in the system data, which causes the Ba gun to show that it has been scanned during scanning.
You can try the following methods to solve the problem:
1. Check commodity barcode: You can manually find and check commodity or barcode information to ensure that the barcode information entered during scanning is accurate.
2. Change gun scanning: If you encounter the problem of repeated scanning with a gun, you can try changing gun scanning.
3. Restart the system: You can try to restart the system and update the system data to ensure that the barcode can be recognized normally when scanning the gun.
If you encounter other problems or still can't solve them, it is recommended that you contact relevant technical support personnel to deal with the problems in time.