WEIMI / KEEP THE PREFIX WITH THE VALUE
000750 is not the whole answer.
The application identifier determines where the decimal belongs.
Illustrative isolated fields, not complete barcode examples.
Introduction
A supplier’s stock handoff contains a six-digit field, 000750. One spreadsheet column calls it weight, and the import screen shows 750. The buyer expected a value below one kilogram. This invented scenario is a data-contract problem, not a reported WEIMI fault or customer case. Before correcting the digits, the reviewer needs the application identifier that describes their meaning.
For a GS1 measurement field, the prefix can carry information needed to interpret the numeric value. Stripping that prefix during a handoff can leave a plausible number with the wrong scale. Preserving digits is useful, but preservation alone does not prove that the software understands the measurement. The purchasing check should connect the raw field to its decoded value and unit.
The official references are GS1 AI 3103 and GS1 AI 3100, reviewed on 11 October 2026. Both describe net weight in kilograms for a variable-measure trade item. They differ in the implied decimal position. This guide explains that narrow decoding question; it does not establish complete symbol validity or any machine’s variable-weight sales capability.
Quick Answer
Keep three elements together in the acceptance sample: the application identifier, the six-digit raw value and the expected decoded kilograms. The GS1 3103 reference gives the format N4+N6 and explains that the fourth AI digit, 3, indicates three decimal places. The raw value 000750 therefore becomes 0.750 kg in this isolated field example.
The 3100 reference has the same numeric-field length but its fourth digit is 0. Its interpretation has no decimal places, so 000750 becomes 750 kg. Do not infer a decimal position from the merchandise name or from a familiar-looking number. The actual AI is the interpretation evidence.
These examples are not complete barcodes, valid test GTINs or product specifications. The reference pages also describe associations and pairing rules. Have the implementation owner review the full message against the relevant specifications. A buyer can test this one interpretation without claiming the entire GS1 application is conformant.
Comparison Table
| Isolated illustrative field |
Reference interpretation |
Expected decoded value |
| AI 3103 / 000750 |
Three decimal places; net weight in kilograms. |
0.750 kg |
| AI 3100 / 000750 |
Zero decimal places; net weight in kilograms. |
750 kg |
| 000750 with no AI |
The numeric digits alone do not identify the selected AI interpretation. |
Unresolved; do not guess the scale. |
The large second result is intentional: it demonstrates that the same digits can represent a different value. It is not a suggested retail pack, a recommended stock weight or a manufacturer capacity. In a real handoff, review the actual application and associated product data.
Who Should Buy This
Use this brief when a vending project receives GS1 variable-measure attributes from a supplier, label system or stock interface. It is useful when the import process extracts numeric values from a larger message, or when a worksheet separates the AI from the value. Confirm that the project actually uses such fields before adding this requirement to a hardware quotation.
Involve the data owner and the implementation provider. The data owner explains the supplied field and the intended measurement. The provider shows how the receiving system preserves and decodes it. Commercial staff should retain the expected-result sheet, but should not invent missing identifiers or change measurements to make a demonstration pass.
A cabinet selling fixed-price packaged goods may not need a variable-measure workflow. A compatible packaged product and a correct weight attribute do not prove that a machine charges by weight. Keep the planned retail model, physical handling and data-import requirement explicit in the purchase scope.
How We Evaluate Smart Vending Machines
We compare three public equipment listings and the two official AI references. We have not scanned a pack, imported weight data into the listed machines or tested a variable-price transaction. The steps below describe proposed acceptance work for an offered data interface.
- Identify the actual field. Record the AI and raw numeric value supplied by the data owner.
- Define the expected decode. Use the AI’s official meaning, unit and decimal rule.
- Keep a raw reference. Preserve the six-digit representation alongside the decoded value.
- Inspect the handoff. Check whether the intermediary worksheet or file keeps the AI and value association intact.
- Review the destination. Compare the imported measurement and unit with the expected result in an agreed test environment.
- Exercise an unresolved case. Ask the provider to show what happens if the AI is missing, rather than silently applying a default scale.
- Retain the evidence. Record the input, output, interface version and responsible owner.
A field-level test does not replace full message validation. The reviewed 3103 page lists a mandatory association with one of AI 01 or 02 and invalid pairings within the 3100–3105 range. This article does not construct a full compliant symbol; the implementation owner must address those requirements and the applicable context.
Key Buying Factors
Meaning travels with the AI. A numeric column labelled weight is not equivalent to the original application identifier. Ask the provider whether the field retains its GS1 semantics through the handoff or is transformed under an explicit data contract. Do not rely on an undocumented decimal assumption.
Raw and decoded representations. The raw six digits and the decoded kilogram value serve different purposes. Retain both in the acceptance reference so a reviewer can locate whether a discrepancy arose in extraction, scaling or later presentation. The raw field should not be mistaken for a quantity of kilograms before decoding.
Unit visibility. The references reviewed here are kilogram fields. The destination should retain the unit associated with the value. This article does not review pound or volume AIs, conversion factors or pricing rules. If the project uses other measurement attributes, add their specific references and expected outcomes.
Length and interpretation. The listed format is N4+N6: a four-digit AI and a six-digit numeric data field. A successful check of numeric length still does not establish the correct scale. Include the AI in the test input and inspect the resulting measurement, not just whether the import accepted the row.
Missing context. An incomplete handoff should remain unresolved until the data owner supplies the necessary context. Guessing 0.750 because it resembles a consumer pack can produce a plausible mistake. Define the provider’s handling of a missing AI in the agreed interface rather than accepting silent inference.
Operational boundary. Camera recognition, a touchscreen and stock management are not evidence of GS1 variable-measure parsing. Ask which interface is actually supplied and where the decoded attribute is used. Pricing, payment and legal-for-trade requirements need their own project review.
Best Smart Vending Machines
The following real listings form a hardware shortlist. “Best” describes fit for the quoted merchandise and selling format, not tested GS1 decoding, weighing accuracy or variable-price capability.
Single-Door AI Vision Smart Fridge for Packaged Drinks
Open public product listing →
The single-door AI vision fridge listing describes cameras recognising selected packaged products, five shelf levels and five baskets, plus a top-screen or light-box option. It stores compatible packaged goods rather than preparing fresh juice. Confirm cooling conditions and recognition scope in the offer. If supplier weight attributes are part of product onboarding, ask where the quoted system receives and decodes them. Camera recognition does not establish that the cabinet weighs a selected item or processes AI 3103.
WM22 Snacks and Drinks Vending Machine
Open public product listing →
WM22 is listed with a 21.5-inch touchscreen, inventory management and cooling. Spiral, conveyor, direct-push and hanging arrangements are options that need confirmation in the selected configuration. Assess physical package suitability against the quoted mechanism. Any data import should be specified separately, with an expected weight result and unit. The public page does not demonstrate a variable-measure decoder or weight-based payment workflow.
Two Cabinets, More Choice: Snack & Drink Vending Station
Open public product listing →
The dual-cabinet page shows a main product display and an additional visible spiral-stock area. It does not justify assumptions about shared software, independent cooling, another touchscreen or precise capacity. If the quotation includes stock-data import, identify its software boundary and the intended selling section. The number of cabinet areas cannot establish whether measurement attributes are interpreted correctly.
Feature Comparison
| Evidence checkpoint |
Useful demonstration |
Unsupported conclusion to avoid |
| Numeric-field preservation |
The raw AI and six-digit value remain associated. |
That the decoded measurement is automatically correct. |
| Decimal interpretation |
AI 3103 example becomes 0.750 kg. |
That every AI uses three decimal places. |
| Comparison case |
AI 3100 example becomes 750 kg. |
That 750 kg is a valid product for the intended vending site. |
| Destination unit |
The imported value remains labelled in kilograms. |
That other units or conversions have been reviewed. |
| Full message review |
Implementation owner addresses applicable associations and context. |
That isolated field examples are complete barcode evidence. |
| Hardware shortlist |
The quoted format fits confirmed merchandise requirements. |
That public listings demonstrate GS1 parsing or weight-based checkout. |
Keep the observed result distinct from the supplier’s design explanation. A screen can show a decoded value; it does not reveal every parser rule or integration path. Retain the actual sample and interface version with the result.
Cost & ROI Analysis
For a hypothetical acceptance exercise, assume six sample cases each need eight minutes of preparation and review, followed by twelve minutes consolidating the record. The total is 60 minutes. At an assumed reviewer rate of US$42 per hour, the active labour amount is US$42. These are illustrative planning figures, not a software quote or customer result.
| Assumed activity |
Time |
Illustrative labour |
| Six sample cases |
6 × 8 minutes = 48 minutes |
$33.60 |
| Evidence consolidation |
12 minutes |
$8.40 |
| Total |
60 minutes |
$42 |
Integration development, scanner configuration, supplier-data cleanup and full GS1 message review are not included. Request actual prices after defining the interface and deliverables. A quick accepted import does not eliminate the cost of resolving an incorrect decimal interpretation.
As a separate sensitivity example, suppose a manual correction takes ten minutes per affected stock record at the same rate. That assumed burden is US$7 per record; six such corrections would equal US$42. The arithmetic does not prove that errors occur, that the exercise prevents them or that the machine produces a return. Collect actual defect and correction records before claiming savings.
Weight-based sales, if part of the project, require separately confirmed commercial and technical rules. This article offers no sale prices, legal-for-trade conclusion or revenue model. A correctly decoded field is one acceptance result, not a business case for the cabinet.
Best Choice by Scenario
A GS1 3103 handoff. Use a sample retaining the AI, the six-digit value and expected kilograms. For the isolated example 000750, require 0.750 kg at the agreed destination. Review the full message separately with the implementation owner.
A worksheet containing only numbers. Ask the data owner for the missing field context before deciding a scale. Preserve the original file and record the gap. A familiar product category does not determine the missing AI.
A fixed-price packaged-goods project. Choose the vision fridge, WM22 or dual-cabinet format on confirmed product and handling fit. Add a weight-attribute review only if the offered workflow uses that data. Do not infer variable-price selling from a stock-management feature.
A proposed variable-measure sale. Require the supplier to identify the complete offered workflow, including product association and pricing boundaries. The shortlist provides no evidence that those functions exist. Resolve the requirement before selecting a format on that basis.
Applications
At supplier onboarding, retain the raw field alongside its decoded meaning in the test manifest. The manifest should state which interface receives the information and where the buyer will inspect the result. Avoid changing the raw digits just to match a spreadsheet display.
At an intermediary export, compare the AI-value association before and after the transformation. A file can keep all six digits while losing the prefix that determines the scale. Record that outcome separately from leading-zero loss in an identifier field.
At software acceptance, use safe non-production samples and compare destination measurements with the approved reference. If the provider uses a transformed field rather than the original GS1 attribute, request the explicit conversion contract. Do not assume that a generic weight column preserves the original semantics.
At a later interface change, repeat the relevant samples against the changed route and retain the version. This is a proposed maintenance check, not evidence that any listed WEIMI product has already passed or that the parser works for every GS1 AI.
FAQ
What does AI 3103 mean in the reviewed GS1 reference?
It describes net weight in kilograms for a variable-measure trade item. Its fourth digit, 3, indicates three decimal places in the six-digit numeric value.
Does 000750 always mean 0.750 kilograms?
It has that interpretation in the isolated AI 3103 field example. With AI 3100, the same six digits represent 750 kilograms because there are no decimal places. The AI is part of the interpretation, not optional context.
Is a six-digit weight value a complete GS1 barcode?
No. The example isolates one data field to explain decimal interpretation. The reviewed reference also lists mandatory associations and pairing rules. A complete symbol or message needs review against the applicable GS1 specifications.
Do the leading zeros make this a GTIN?
No. AI 3103 describes a measurement attribute. A GTIN is an identifier with a different role. Preserve the raw field and decode its measurement semantics rather than applying identifier rules to it.
Does a correct decoded weight prove variable-price checkout works?
No. It demonstrates one data interpretation. Product association, pricing rules, display, payment and physical handling need separate confirmed requirements and evidence. No listed machine is claimed to support such a checkout.
Have these three vending machines passed a weight import test?
No. The article uses public product listings for a hardware shortlist. The proposed decoder and import checks have not been run on a WEIMI machine or supplier portal.
Final Recommendation
Treat the AI as part of the measurement meaning. Keep the raw six-digit field, the decimal rule and the kilogram result connected through the supplier handoff. Compare a concrete expected outcome rather than accepting a row merely because it imports successfully.
Select the vending cabinet on the actual product and handling offer. For any included variable-measure interface, request field-level evidence and a separate full-message review. The two official AI examples explain decimal interpretation; they do not prove complete barcode validity, machine weighing or a weight-based checkout.
CTA
Send WEIMI your planned merchandise and cabinet format. If supplier measurement attributes are part of the integration, include the actual AI, safe sample values, expected units and destination fields. Request a quotation that identifies the hardware configuration and any offered data-interface scope.
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The shortlist is based on public listings. This guide reports no independent machine test, verified import, complete GS1 conformance, pricing capability, legal determination or Google-indexing outcome.
