12 - 64 DS457-XX20004ZZWW Fixed Mount Imager Integration Guide
MSI Check Digits
Parameter # 50 (SSI # 32h)
With MSI symbols, one check digit is mandatory and always verified by the reader. The second check digit is
optional. If the MSI codes include two check digits, scan the Two MSI Check Digits bar code to enable
verification of the second check digit.
See MSI Check Digit Algorithm on page 12-65 for the selection of second digit algorithms.
*One MSI Check Digit
(0)
Two MSI Check Digits
(1)