GS1 Application Identifier Specifications
The GS-1 Application Identifier (AI) appears after a
Function Code 1 (FNC1) in Code 128, Data Matrix or DataBar Expanded barcodes to encode certain types of information.
Multiple AIs may be encoded in
DataBar Expanded barcodes for use in POS systems, which replace UPC and EAN symbols in the same space or less. This allows serial numbers, sell-by dates and other
information to be easily verified at the point of sale. Encoding examples are available for
Code 128,
DataBar Expanded and
Data Matrix ECC200 barcodes.
When generating GS-1 Symbols, the following rules apply:
- The AI is defined by the digits after the FNC1 character,
which must be the first character in a GS-1 barcode. Within all IDAutomation
products, placing parentheses around the AI automatically encodes the FNC1
character.
- The element string is the combination of the AI and its data field.
- Multiple fixed length element strings may be included in a single barcode
symbol without additional FNC1 characters, if variable length element strings (such
as those with AIs 10, 21 or 92 as defined below) are included last. This is because
the reading device understands the length of each fixed length element string.
- If additional element strings are encoded after a
variable length element string, an
additional FNC1 is required between them to define the end of the previous variable length
element string.
- When encoding Data Matrix and Databar barcode symbols, MOD10 check digits are not
usually included in fixed
length element strings.
- The FNC1 character is included in DataBar automatically and is encoded
in DataBar Expanded with parentheses.
- A MOD10 check digit is required for some element strings. This check digit
is not always encoded within the barcode. Usually, Code 128 barcodes require the
MOD10 to be encoded while Databar and Data Matrix do not.
The following chart provides examples of common GS1 element strings as defined by the
GS1 Application Identifier Specification (v13 2013) and should be verified
by a
GS1 Member Organization before implementation.
Purpose |
AI |
Data Field Format
(Fixed or Variable) |
| SSCC-18 |
00 |
18 numbers: 17 digits + MOD10 check digit |
| GTIN-14 |
01 |
14 numbers: 13 digits + MOD10 check digit |
| GTIN-14
of contained items |
02 |
14 numbers: 13 digits + MOD10 check digit |
| Batch or Lot Number |
10 |
Variable, up to 20 digits |
| Production Date |
11 |
6 numbers: YYMMDD |
| Packaging Date |
13 |
6 numbers: YYMMDD |
| Sell By Date |
15 |
6 numbers: YYMMDD |
| Expiration Date |
17 |
6 numbers: YYMMDD |
| Serial Number |
21 |
Variable, up to 20 digits |
| Count of items |
30 |
Variable, up to 6 numbers |
| USPS |
91 |
20 numbers: 19 digits + MOD10 check digit
USPS
Delivery Confirmation Service |
| Intra Company Internal |
92-98 |
Variable, alpha numeric internal use data up to 30 characters |
| USPS |
99 |
USPS
Intelligent Mail Container Barcode |
| Global Coupon |
255 |
12 digits + MOD10 check digit |
| Ship to |
410 |
13 numbers: 12 digits + MOD10 check digit |
| Ship to |
420 |
Variable, up to 20 digits |
| Net Weight in Kilograms |
3103 |
6 numbers: AI is 310(n), where (n) indicates the decimal position |
| Net Weight in Pounds |
3202 |
6 numbers: AI is 320(n), where (n) indicates the decimal position |
| Price |
3922 |
Variable, up to 15 numbers: AI is 392(n), where (n) indicates the decimal position |
| Price in ISO Currency |
3932 |
Variable, up to 15 numbers: AI is 393(n), where (n) indicates the decimal position |
| GIAI |
8004 |
Global Individual Asset Identifier, often used in DOD UID Labels. |
| Coupon Extended Code |
8100 |
6 numbers |
| USA Coupons Codes |
8110 |
The
DataBar Coupon Symbol consists of the company prefix, offer
code and other data as defined by the Joint Industry Coupon
Committee and GS1. |
Element String Examples:
|
Element String |
| AI |
GTIN Field |
| 01 |
10614141543219 |
| Data To Encode: (01)10614141543219 |
(01)10614141543219 |
|
Element String |
Variable Element String |
| AI |
GTIN Field |
AI |
Date Field |
| 01 |
23456789012345 |
15 |
171231 |
| Data To Encode: (01)345678901234515171231 |
(01)3456789012345(15)171231 |
|
Variable Element String |
Variable Element String |
| AI |
Batch Field |
AI |
Serial Number Field |
| 10 |
3456789 |
21 |
3456789012 |
| Data To Encode: (10)3456789(21)3456789012 |
(10)3456789 (21)3456789012 |
|
