The following document contains the procedure and barcodes for setting the Global Prefix and Global Suffix of the WDI4200 scanner. If desired, the WDI4200 can read the barcodes from a PC screen (you may need to zoom in), instead of printing before scanning.

Note: The Programming Reference Guide for the WDI4200 contains an incorrect configuration barcode for Set Global Prefix. The document below contains a replacement page with the correct barcode.

http://dl.waspbarcode.com/kb/scanner/WDI4200-Suffix-and-Prefix.pdf