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GS1-128 Separator after Fixed Length AI

Tagged With:-

Gs1-128

Group-separator

Fixed-length

Application-identifier

Gs1-128-ai

We are a bit confused about fixed-length and variable-length GS1 AIs.

Our GS1-128 barcode should encode the following data:

(02)12345678910111(10)1234(37)25

When we scan the barcode (lower-ASCII enabled and in the Free Barcode ASCII Decoder), it scans as:

0212345678910111<GS>101234<GS>3725

From my understanding, I believe it should be:

0212345678910111101234<GS>3725

Here is the code we use:
(
if Not IsNull({@TUCTrim}) then
"~21202" &
Replace(Replace(ToText({@TUCTrim}),".00",""),",","")
) &
(
if Not IsNull({@LotBatchNo}) then
"~21210" &
{@LotBatchNo}
) &
(
if Not IsNull({TRANSPORT_PACKAGE_LABEL_REP.QUANTITY}) then
"~21237" &
Replace(Replace(ToText({TRANSPORT_PACKAGE_LABEL_REP.QUANTITY}),".00",""),",","")
)

If I change this:

if Not IsNull({@LotBatchNo}) then
"~21210" &
{@LotBatchNo}

To this:

if Not IsNull({@LotBatchNo}) then
"10" &
{@LotBatchNo}

The barcode text is no longer correct. Am I doing something wrong?

Operating System: Windows

Application: Crystal Reports

11-26-15 8.9 year(s) ago

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James	Best Answer In general, GS1 stipulates that besides the leading Application Identifier (AI), the fixed-length AIs should come next (without parentheses or use tilde identifiers), then the variable-length AIs go at the very end. General GS1-128 Example:* This example is not accurate as to which AIs as variable or fixed-length. It serves as an example of encoding GS1-128 AIs. AIs: • 01 – fixed • 02 – fixed • 03 – variable The above AIs are in bold: • *Tilde Method: ~21201444025555~212036666 • *Parentheses Method: (01)444025555(03)6666 Review the above link and example, then pattern your data to match. Applies to: • Code 128 Barcode Font Package • IDAutomation Barcode Font Encoders When generating GS1 symbols, IDAutomation recommends testing the result with the Barcode Decoder App which parses out GS1 data to verify proper encoding. Posted 8.9 year(s) ago (0) (0) Report Abuse

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Other Answers (2)

James

The standard suggests variable-length AIs are to be at the end, with a special character (what the <GS> is) separating each variable-length AI onwards.

The human-readable text (HR) is supposed to read parentheses around each AI, whether or not it is variable or fixed, but this is just the text representation of the barcode, not what is actually encoded in the barcode itself.

We generally recommend that the HR be added as a separate text field (in your report interface) under the barcode.

Posted 8.9 year(s) ago

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sandra

Unless I am reading the standard wrong - no parentheses would be needed at the (03) part in your example:

I think this should be correct (I may be reading the standard wrong):

~21201444025555036666

In addition, does that mean we need to create a different string to pass to the human-readable text? Most people would expect the human-readable text to look like this:

(01)444(02)5555(03)6666

Posted 8.9 year(s) ago

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