What Are Electronic Product Code Information Services?

Electronic Product Code Information Services (EPCIS) are a set of GS1-standardized interfaces and data models for capturing and sharing visibility event data within and across enterprises. It allows organizations to create a shared record of what happened to a physical or digital object, when and where it occurred, and the business context surrounding each step. EPCIS does not prescribe how data is collected, meaning it accepts inputs from RFID readers, barcodes, sensors, or manual systems, making it applicable across a wide range of supply chain maturity levels.

EPCIS emerged from the EPCglobal initiative in the early 2000s as the data sharing layer of the broader EPC Network. GS1 standardized and maintained successive versions, with EPCIS 2.0 published in 2022 as a significant update that added support for sensor-based observations, JSON-LD serialization, and REST-based application programming interfaces alongside the earlier SOAP/XML approach. Background on the benefits and adoption of EPCIS across industries is detailed in GS1's EPCIS traceability documentation.

The EPCIS Event Model

The EPCIS standard organizes supply chain activity into discrete events, each of which records four dimensions: the object or set of objects involved (the "what"), the timestamp (the "when"), the location (the "where"), and the business step and disposition (the "why"). The standard defines several event types to cover different supply chain scenarios. Object events record actions on individual items, such as a scan at receiving. Aggregation events capture how items are grouped into cases or pallets. Transaction events link activity to business documents like purchase orders. Transformation events describe how input materials are converted into output goods, supporting pharmaceutical compounding and food processing use cases. The EPCIS and Core Business Vocabulary standard published by GS1 provides the normative definitions for all event types and their required fields.

Core Business Vocabulary

EPCIS defines the structure of events, but a companion standard, the Core Business Vocabulary (CBV), defines the controlled vocabulary of values that populate those structures. CBV specifies standardized codes for business steps (such as "shipping" or "receiving"), dispositions (such as "in_transit" or "recalled"), and location types. By constraining the vocabulary, CBV enables unambiguous interpretation of events across trading partner systems without requiring bilateral negotiation over terminology. Organizations that use CBV-compliant values can share EPCIS data with any counterpart using the same standard, achieving interoperability by design rather than by custom mapping.

Capture and Query Interfaces

EPCIS defines two interface directions: a capture interface through which event data is submitted to a repository, and a query interface through which stored events are retrieved. The query interface supports both synchronous queries, where a caller requests events matching specified criteria, and standing subscriptions, where new matching events are pushed to a subscriber as they arrive. EPCIS 2.0 added a REST-based API alongside the earlier SOAP interface, reflecting the shift toward web-native architectures in enterprise integration. The EPCIS 2.0 implementation guideline describes the interface specifications in detail. These interfaces are designed to work within the broader EPC Network, where the Object Name Service resolves product identifiers to the EPCIS repositories that hold their history.

Applications

Electronic Product Code Information Services has applications across industries where supply chain transparency and regulatory traceability are required, including:

• Pharmaceutical serialization and compliance with regulations such as the U.S. Drug Supply Chain Security Act and the EU Falsified Medicines Directive
• Food safety and fresh produce traceability, supporting rapid identification of contamination sources
• Retail inventory visibility and out-of-stock prevention through item-level tracking
• Cold chain monitoring, using EPCIS 2.0 sensor events to record temperature excursions
• Logistics documentation and proof-of-delivery verification for high-value goods