If your PS-50 is adding a leading zero to the barcode, you can remove this by scanning the series of barcodes listed in the following PDF print out.
To do so, simply download and print off this PDF and scan the series of barcodes in the same sequence that they are laid out in the PDF.
PS50 Barcode Scanner - Remove Leading Zero.pdf
Please ensure that you test the accuracy of your Barcode scanner following the reconfiguration process.