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The UPU S10 standard defines a system for assigning 13-character identifiers to items for the purpose of tracking and tracing them during shipping. The identifiers consist of a two letter service indicator code, an eight digit number, a check-digit, and a two-letter ISO country code, the latter identifying the issuing postal administration. With increased liberalization and the possibility of multiple postal services operating in the same country, the use of country codes to designate the postal service is a problem. To solve this, each country has a designated postal service that controls all S10 identifiers from that country; any competing postal services will have to cooperate with the designated owner. The check-digit is calculated as follows : Ignore the Service Indicator Code and Country Code Assign the weights 8, 6, 4, 2, 3, 5, 9, 7 to the 8 digits, from left to right Calculate S, the sum of each digit multiplied by its weight. For example, for the number 47312482, S = 4 *8 + 7 *6 + 3 *4 + 1 *2 + 2 *3 + 4 *5 + 8 *9 + 2 *7 = 200 Calculate the check digit, C, from C = 11 - (S mod 11) If C = 10, change to C = 0 If C = 11, change to C = 5 For the example 47312482 C = 11 - (200 mod 11) = 11 - 2 = 9. ==See also== * Serial Shipping Container Code, a related standard. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「S10 (UPU standard)」の詳細全文を読む スポンサード リンク
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