GS1 Application Identifiers (AIs)

Attribute information is any information over and above the GS1 Identification Key. In the GS1 System, Application Identifiers (AIs) allow you to represent attribute information such as batch numbers, serial numbers, expiration dates, and measurements, as well as item identification, locations, assets, and shipments in a standard format. Please note any attribute data must be associated with the appropriate GS1 Identification Key, which also has its own Application Identifier.

GS1 Application Identifiers are a finite set of defined identifiers used to connect physical things and logical things to information or business messages related to them. The definitions for them reside in a standard called the GS1 General Specifications, you may have a look on the following list of GS1 Application Identifiers in numerical order.


Key Concepts

  • There are approximately 100 Application Identifiers (AI)
  • Each AI has a two, three, or four digit numeric Prefix in front of the data to tell what the data means. For example,
  • the AI for SSCC is (00) and for GTIN it is (01)
  • GS1-128, GDS1 DataBar, GS1 DataMatrix, and Composite Component can carry AIs
  • More than one AI can be carried in one bar code. When this happens, AIs with a fixed length data content (e.g., SSCC has a fixed length of 18 digits) are placed at the beginning and AI with variable lengths are placed at the end. If more than one variable length AI is placed in one bar code, then a special "function" character is used to tell the scanner system when one ends and the other one starts.
  • When AIs Prefixes appear in the text beside the bar code they are surrounded by parenthesis (e.g., GTIN (01) 10614141000019)
  • Seven AIs are used for the Keys (GTIN, GLN, SSCC, GRAI, GIAI, GDTI, GSRN)
  • 45 AIs are trade item attributes like variable count, net weight, lot number, and expiry date
  • 28 AIs are logistic unit attributes like count of trade items contained, gross weight, gross volume, routing code
  • One AI is a physical location attribute called the GLN Extension

The balance are used for special purposes like Shipment Identification, Consignment Identification, Couponing, Refund Receipts, Electronic Serial Identification for Cellular Mobile Telephones, Internal Use, Payment Slips, and Customer Specified Articles


List of GS1 Application Identifiers in Numerical Order

Notes:

*: The first position indicates the length (number of digits) of the GS1 Application Identifier. The following value refers to the format of the data content. The following convention is applied:

  • ¡ N numeric digit
  • ¡ X any character in figure 7.12 - 1
  • ¡ N3 3 numeric digits, fixed length
  • ¡ N..3 up to 3 numeric digits
  • ¡ X..3 up to 3 characters in figure 7.12 - 1  

**: If only year and month are available, DD must be filled with two zeroes.

***: The fourth digit of this GS1 Application Identifier indicates the implied decimal point position.

Example:

  • ¡ 3100 Net weight in kg without a decimal point
  • ¡ 3102 Net weight in kg with two decimal points

FNC1:

All GS1 Application Identifiers indicated with (FNC1) are defined as of variable length and shall be delimited unless this Element String is the last one to be encoded in the symbol. The delimiter shall be a Function 1 Symbol Character in GS1-128 Symbology, GS1 DataBar Expanded Versions and GS1 Composite Symbology and should be a Function 1 Symbol Character in GS1 DataMatrix Symbology.

Figure 3.2 - 1

AI

Data Content

Format*

FNC1 Required

Data Title

00

SSCC (Serial Shipping Container Code)

N2+N18

 

SSCC

01

Global Trade Item Number (GTIN)

N2+N14

 

GTIN

02

GTIN of Contained Trade Items

N2+N14

 

CONTENT

10

Batch or Lot Number

N2+X..20

(FNC1)

BATCH/LOT

11 (**)

Production Date (YYMMDD)

N2+N6

 

PROD DATE

12 (**)

Due Date (YYMMDD)

N2+N6

 

DUE DATE

13 (**)

Packaging Date (YYMMDD)

N2+N6

 

PACK DATE

15 (**)

Best Before Date (YYMMDD)

N2+N6

 

BEST BEFORE or SELL BY

17 (**)

Expiration Date (YYMMDD)

N2+N6

 

USE BY OR EXPIRY

20

Variant Number

N2+N2

 

VARIANT

21

Serial Number

N2+X..20

(FNC1)

SERIAL

22

Secondary Data Fields

N2+X..29

(FNC1)

QTY /DATE /BATCH

240

Additional Item Identification

N3+X..30

(FNC1)

ADDITIONAL ID

241

Customer Part Number

N3+X..30

(FNC1)

CUST. PART NO.

242

Made-to-Order Variation Number

N3+N..6

(FNC1)

MTO VARIANT

250

Secondary Serial Number

N3+X..30

(FNC1)

SECONDARY SERIAL

251

Reference to Source Entity

N3+X..30

(FNC1)

REF. TO SOURCE

253

Global Document Type Identifier (GDTI)

N3+N13+N..17

(FNC1)

GDTI

254

GLN Extension Component

N3+X..20

(FNC1)

GLN EXTENSION COMPONENT

30

Count of Items (Variable Measure Trade Item)

N2+N..8

(FNC1)

VAR. COUNT

310 (***)

Net weight, kilograms (Variable Measure Trade Item)

N4+N6

 

NET WEIGHT (kg)

311 (***)

Length or first dimension, metres (Variable Measure Trade Item)

N4+N6

 

LENGTH (m)

312 (***)

Width, diameter, or second dimension, metres (Variable Measure Trade Item)

N4+N6

 

WIDTH (m)

313 (***)

Depth, thickness, height, or third dimension, metres (Variable Measure Trade Item)

N4+N6

 

HEIGHT (m)

314 (***)

Area, square metres (Variable Measure Trade Item)

N4+N6

 

AREA (m2)

315 (***)

Net volume, litres (Variable Measure Trade Item)

N4+N6

 

NET VOLUME (l)

316 (***)

Net volume, cubic metres (Variable Measure Trade Item)

N4+N6

 

NET VOLUME (m3)

320 (***)

Net weight, pounds (Variable Measure Trade Item)

N4+N6

 

NET WEIGHT (lb)

321 (***)

Length or first dimension, inches (Variable Measure Trade Item)

N4+N6

 

LENGTH (i)

322 (***)

Length or first dimension, feet (Variable Measure Trade Item)

N4+N6

 

LENGTH (f)

323 (***)

Length or first dimension, yards (Variable Measure Trade Item)

N4+N6

 

LENGTH (y)

324 (***)

Width, diameter, or second dimension, inches (Variable Measure Trade Item)

N4+N6

 

WIDTH (i)

325 (***)

Width, diameter, or second dimension, feet (Variable Measure Trade Item)

N4+N6

 

WIDTH (f)

326 (***)

Width, diameter, or second dimension, yards (Variable Measure Trade Item

N4+N6

 

WIDTH (y)

327 (***)

Depth, thickness, height, or third dimension, inches (Variable Measure Trade Item)

N4+N6

 

HEIGHT (i)

328 (***)

Depth, thickness, height, or third dimension, feet (Variable Measure Trade Item)

N4+N6

 

HEIGHT (f)

329 (***)

Depth, thickness, height, or third dimension, yards (Variable Measure Trade Item)

N4+N6

 

HEIGHT (y)

330 (***)

Logistic weight, kilograms

N4+N6

 

GROSS WEIGHT (kg)

331 (***)

Length or first dimension, metres

N4+N6

 

LENGTH (m), log

332 (***)

Width, diameter, or second dimension, metres

N4+N6

 

WIDTH (m), log

333 (***)

Depth, thickness, height, or third dimension, metres

N4+N6

 

HEIGHT (m), log

334 (***)

Area, square metres

N4+N6

 

AREA (m2), log

335 (***)

Logistic volume, litres

N4+N6

 

VOLUME (l), log

336 (***)

Logistic volume, cubic metres

N4+N6

 

VOLUME (m3), log

337 (***)

Kilograms per square metre

N4+N6

 

KG PER m²

340 (***)

Logistic weight, pounds

N4+N6

 

GROSS WEIGHT (lb)

341 (***)

Length or first dimension, inches

N4+N6

 

LENGTH (i), log

342 (***)

Length or first dimension, feet

N4+N6

 

LENGTH (f), log

343 (***)

Length or first dimension, yards

N4+N6

 

LENGTH (y), log

344 (***)

Width, diameter, or second dimension, inches

N4+N6

 

WIDTH (i), log

345 (***)