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GS1 APPLICATION IDENTIFIERS
There are many industries
which follow the GS1 (UCC/EAN) identification
guidelines. In order to attribute meaning to data
encoded within a bar code symbol, an Application Identifier
(AI) prefix code used. Aside from denoting the meaning,
this prefix also indicates the format of the data that
follows it (data field). There are AIs for identification,
traceability, dates, quantity,
measurements, locations, and many other types
of information.
For example, the AI for batch number is 10,
and the batch number AI is always followed by an
alphanumeric batch code not to exceed 20-characters.
The GS1 Application Identifiers provide an
open standard which can be used and understood by all
companies in the trading chain, regardless of the
company that originally issued the codes.
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