Hello,
I hope this is helpful. Most barcode scanner vendors have a means of adding a suffix (or post-amble) to the scanned barcode built-in to their devices. If the scanner does not have a display (wedge between the keyboard/USB/COM Port), it typically means you'll scan a barcode to enter the setup mode, then a suffix entry scan, then add the characters for the suffix (tab/ENTER) and then a save barcode setup. Upon any scan, it would then emulate the associated character being typed. This is usually in the manual for the barcode scanner, but I've honestly not worked with stand-alone/wedge barcode scanners/RS-232 scanners in several years. But should still work like this.
For devices such as the Janam XT series (Android tablet), you would go to "BCR Settings", "Suffix", and enter "\t" (for a tab character). This way, when the scan is completed, the tab character would initiate the parse hook in ME which would then translate the received text to their associated fields. This is how it works for mobile assembly.
If you can provide the exact model of barcode scanner you are using, I'll see if I can find the manual on-line and see if I can provide more detailed recommendations.
Best Regards,
Jon