|The Royal Mail Bar Code (RM4SCC) consists of four parts; the International
|Prefix (optional), the Outward Code (required), the Inward Code (required), and
|the Delivery Point Suffix (optional).
|The International Prefix, when used, contains three numeric digits.
|The Outward Code contains from two to four characters in one of the following
|seven forms where A is alphabetic and N is numeric:
| ANA
| AAN
| AANN
| AANA
| AN
| ANN
| AAA
|The Inward Code contains one numeric character followed by two alphabetic
|characters.
|The Delivery Point Suffix, when used, contains one numeric digit followed by
|one alphabetic character other than C, I, K, M, O, and V.
| JPBC
|The following characters are valid.
|ð123456789
|ABCDEFGHIJKLMNOPQRSTUVWXYZ
|-
|The length of data can be from 7 to 50 characters.
|For additional information about JPBC bar code data, press the Help key with
|the cursor in the Bar code data prompt on the Define Bar Code or Change Bar
|Code display. For a complete set of rules, see the Japan Postal Bar Code
|Command Specifications.

Check Digit:

The following explains the

Check digit

prompt in detail.
3-of-9 code, 2-of-5 Industrial, 2-of-5 Matrix, Interleaved 2-of-5, Codabar,
CODE128.
YGenerates a check character and prints it with the bar code.
NPrints the bar code with no printer-generated check character.
The default value is N.
MSI
1Prints the bar code with IBM modulo-10 check digit generated by
the printer, and places this check digit at the end of the data. IBM
modulo-10 check digit is the second check digit.
2Prints the bar code with both check digits generated by the printer,
and places them at the end of the data. The first and second check
digits are IBM modulo-10.
3Prints the bar code with both check digits generated by the printer,
and places them at the end of the data. The first check digit is NCR
modulo-11. The second check digit is IBM modulo-10. The
remainder equals the check digit. A check digit of 10 is an error.
262 AFP Utilities for AS/400 User’s Guide