Aggregation and disaggregation events
Packing items into a case, or unpacking a case, changes the unit of trace. This guide covers aggregation and disaggregation as events..
Traceability shows movement and custody. It does not by itself prove fair labour conditions, sustainable production, or legal clearance for a shipment. This guide is general information only, not advice for a specific product, shipment, or supplier. Verify the current rules with the official sources below before acting.
The short answer
Packing is the thread through aggregation and disaggregation events: lose it, and the rest becomes a set of unrelated documents. That is why aggregation and disaggregation events is judged on into first: a complete file for into beats a long file with a gap.
Packing items into a case, or unpacking a case, changes the unit of trace. This guide covers aggregation and disaggregation as events. Packing is the thread through aggregation and disaggregation events: lose it, and the rest becomes a set of unrelated documents.
Hold aggregation and disaggregation events to one test: show packing for a single unit, from start to finish. In aggregation and disaggregation events, into is where a reader should start, because it anchors every later step. Items gives aggregation and disaggregation events its shape: without it, the file has no unit to follow.
What the record must show
Check unpacking in aggregation and disaggregation events against packing: if they disagree, the file, not the label, needs fixing. Link items to into in aggregation and disaggregation events: unlinked items are claims, not evidence.
In aggregation and disaggregation events, case without a custodian is a loose end, not a completed step. One unit through aggregation and disaggregation events should show items, then into, then case, in that order.
In aggregation and disaggregation events, a quantity for items without a custodian for into leaves the step open. A file for aggregation and disaggregation events that lacks case can still be useful, but it cannot support a full claim. The file for aggregation and disaggregation events carries packing alongside items, so either can be found from the other.
How it works in practice
Record into at the moment it happens in aggregation and disaggregation events, not from memory later. Agree packing before collecting anything for aggregation and disaggregation events: definition first, data second.
Assign unpacking to a named party in aggregation and disaggregation events: vague ownership produces vague files. Keep packing and items in the same file for aggregation and disaggregation events, so a reader need not guess the link.
Train the people who handle unpacking in aggregation and disaggregation events on the file itself, not only on the product. Before work starts on aggregation and disaggregation events, agree the identifier for packing and the format for items. During aggregation and disaggregation events, record into in the same form every time, so later files line up.
Where the record breaks
Missing case in aggregation and disaggregation events is a gap, not a detail: state it plainly. A handover of items confirmed by one side only breaks aggregation and disaggregation events at that point.
In aggregation and disaggregation events, into filed under a broad code hides which unit it belonged to. unpacking under the wrong unit in aggregation and disaggregation events misleads every later reader of the file.
Files for aggregation and disaggregation events also break when packing is renamed mid-chain without a cross-reference. Watch packing in aggregation and disaggregation events: when it changes hands without a record, the chain stops there. When unpacking is missing in aggregation and disaggregation events, do not fill it from a similar unit: mark the gap.
Checks before relying on it
Test aggregation and disaggregation events for consistency: into agrees across documents, systems, and labels. Sample one unit in aggregation and disaggregation events: follow unpacking backward and forward, and log each stop.
Test aggregation and disaggregation events for consistency: into agrees across documents, systems, and labels. For aggregation and disaggregation events, ask auditor to show packing for one unit, not a summary for many.
Compare case in aggregation and disaggregation events across two sources before accepting either one. Ask for items by date in aggregation and disaggregation events: undated evidence cannot be placed in order. Ask for packing by unit in aggregation and disaggregation events, not by product family: families hide gaps.
Confirming it for your product
Start aggregation and disaggregation events narrow: one family, one site, one reason, with packing defined first. Prove aggregation and disaggregation events on that narrow scope before adding a site, a supplier, or a product.
Keep into current in aggregation and disaggregation events: a stale file is worse than a narrow honest one. End aggregation and disaggregation events with a file auditor can hand to someone else without explaining it.
To confirm aggregation and disaggregation events after a change, re-run the same unit trace and compare files. Keep the confirmed file for aggregation and disaggregation events with into attached, so it can be re-checked later. To confirm aggregation and disaggregation events for a new supplier, ask first for items, not for a certificate.
Sources and evidence on the file
- GS1 EPCIS, on event types for objects, aggregation, and transactions (GS1)
- GS1 Core Business Vocabulary, on event context (GS1)
Evidence basis: Educational summary from the official sources below, describing general traceability practice only. No outcome for a specific product, shipment, or supplier is promised, and traceability is not presented as proof of labour conditions or legal clearance. Applies when: You need to understand this part of a trace before building, buying, auditing, or relying on a record