Why will a 3 of 9 barcode not show when the data it’s mapped to starts with an *?
Hello Denise,
As per Wikipedia’s article on Code 39:
The * character presented below is not a true encodable character, but is the start and stop symbol for Code 39. The asymmetry of the symbol allows the reader to determine the direction of the barcode being scanned. This code is traditionally mapped to the * character in barcode fonts and will often appear with the human-readable representation alongside the barcode.
This means that the * is not a character that can be present within a Code39 barcode’s data.