The GS1 General Specifications provide a global reference document covering all technical aspects of the GS1 System.
These specifications have been developed as a reference document aimed primarily at GS1 Member Organisations and system engineers developing software based upon GS1 System standards. All aspects of the GS1 System are summarized in Section 1, which is recommended for those wishing to become familiar with the GS1 System logic and terminology.
Currently published is version 12 (issued January 2012)
GS1 General Specifications Version 12, Issue 1 (all sections)
Introduction
Basics and Principles of the GS1 System
Application Identification
GS1 Application Identifier Definitions
Application Rules
Data Carriers
Symbol Placement Guidelines
AIDC Validation Rules
GS1 Standards Glossary of Terms