Core Disaggregation Event
Disaggregation events record the breaking down of logistical units into their individual components, allowing each item to once again be tracked on its own.
Event Profile
Disaggregation events are identified by the following characteristics.
KDE | Value |
type | AggregationEvent |
action | DELETE |
disposition | inactive |
bizStep | unpacking |
KDE Requirements
The following KDEs are required on the root of a disaggregation event.
| KDE | Description | Example Value |
|---|---|---|
| eventID | A URN formatted universally unique ID (UUID) | urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx |
| action | The action says how an event relates to the lifecycle of the entity being described. ADD means the entity in question has been created or added to. OBSERVE means the entity in question has not been changed. DELETE means the entity in question has been removed from or destroyed altogether |
ADD, DELETE, OBSERVE |
| disposition | The disposition field of an event specifies the business condition of the event's objects, subsequent to the event. The disposition is assumed to hold true until another event indicates a change of disposition. A full list of disposition values and their definitions is available in the EPCIS Core Business Vocabulary | active |
| eventTime | A string value formatted as an ISO datetime | 2026-01-01T00:00:00.000Z |
| eventTimeZoneOffset | The time zone offset in effect at the time and place the event occurred, expressed as an offset from UTC. The purpose of eventTimeZoneOffset is to provide additional business context about the event, namely to identify what time zone offset was in effect at the time and place the event was captured. | "+00:00" |
| bizLocation | A URN formatted GLN or GDST location identifier validated as a GLN with related master data | urn:epc:id:gln:1234567890123, urn:gdst:example.org:location:loc:examplePrefix.0 |
| parentID | A urn formatted SSCC or GDST LPN identifying the EPC of the parent product the child products are aggregated into | urn:epc:id:sscc:08600031303.solution1, urn:gdst:example.org:lpn:obj:example_prefix.01 |
Disaggregation events MAY not list any child products in the childQuantityList or childEPCs properties to indicate that all child products were disaggregated from the parent product. In this scenario, you must query or the aggregation event that created the parentID EPC and look up the child products on that event.
Full JSON Example
{
"@context": [
"https://ref.gs1.org/standards/epcis/epcis-context.jsonld",
{
"gdst": "https://traceability-dialogue.org/epcis"
}
],
"type": "AggregationEvent",
"eventTime": "2026-04-19T16:08:41.6112327+00:00",
"eventTimeZoneOffset": "+00:00",
"eventID": "urn:uuid:19c1cfb7-5d89-4214-bc96-39b9ba220295",
"parentID": "urn:epc:id:sscc:08600031303.solution1",
"childEPCs": [],
"action": "DELETE",
"bizStep": "unpacking",
"disposition": "inactive",
"bizLocation": {
"id": "urn:gdst:example.org:location:loc:solution.importerwarehouse"
}
}