Standards support and downloads

List of planned upgrades to PREDES V2.1 and EMSEVT V3

This list helps designated operators wishing to upgrade PREDES and EMSEVT to the latest versions communicate the upgrade date to partners. It is refreshed weekly. See UPU circular 2018/093.
Last update: 16 March 2020

Mail subclasses and handling classes: purpose and usage

The purpose of this document is to describe and clarify the current situation both for mail subclasses and handling classes.

Nesting of small packets in PREDES

This document sets out the processes to enable the nesting of small packet item identifiers in a PREDES message.

S10 Check Digit Validation Tool

This tool checks the validity of an S10, 13-character identifier by calculating the check digit in character position 11.

S18 program examples

S18 ID-tagging of letter mail items.

S42 (ISO 19160-4) Postal Address Template Description Language (PATDL)

PATDL is defined according to the W3C XML Schema specification and is used to formally express address rendering rules.
More information about S42 can be found at:

S42 base and extended schemas used in S53

S42-8-Base and S42-8-Extented schemas are based on code list CL 210 of S42 sub-elements and are needed for validation of ENAD files by schema defined in standard S53.

S48 program examples

S48 Postal-4i: 4-state symbology and its user for the encoding of data on postal items.

UPU EDI data elements

Last update: 22 February 2017

UPU EDI Messaging – XML schemas and examples

M30 Electronic Data Interchange between postal handling organisations
M42 eVN - Electronic verification notes
M85 Data dictionary for messages based on UPU standard M30
S57 Statement of mailing submission
Last update: August 2017