Within OP Barcode component, you have the option to create a zone for a barcode to be recognized. There has been intermittent occurrences that not all barcode values are captured if you create a zone to include multiple barcodes.
When using zones, it is always recommended to create a zone for each barcode. The limitation of not being able to use one zone to include several barcodes is being reviewed by development. They are working on a future release to better handle this type of configuration.