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UPU S10
Terry Burton edited this page Oct 13, 2026
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1 revision
UPU S10 is a Code 128 barcode carrying the 13-character S10 identifier of the Universal Postal Union, which identifies postal items, such as registered mail and parcels, as they pass between postal operators.
Uses:
- International tracked postal items.
- Domestic postal items of many postal operators.
Standards: UPU S10 - Identification of postal items - 13-character identifier.
- The data field is the S10 identifier: a two-letter service indicator, an eight-digit serial number, a check digit and the two-letter ISO country code of the issuing postal operator, without spaces.
- If the check digit is omitted then the encoder will calculate and add it. If it is given then it is verified.
- Service indicators beginning with J, K, S, T or W are reserved and are refused.
- The human readable text is spaced in groups for readability.
- The default height is half an inch. The X-dimension of the standard is from 0.25mm to 0.51mm, with a minimum of 0.33mm recommended. The height is at least 9mm and 15% of the width of the symbol, with a minimum of 12.5mm recommended.
Data: EE471108151FR
Options: includetext
Encoder: upus10
With the check digit calculated:
Data: RR47312482GB
Options: includetext
Encoder: upus10
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