Abstract

To verify data in support of local purchasing, this document specifies the requirements for formatting request types (resolve and search) and replies to those requests. The following are within the scope of this document: the syntax requirements and application protocol interface (API) for a request and response to a request for a harmonized system (HS) code formatted in accordance with ISO 8000-115 and the dataset of an item that includes the characteristic data necessary to verify the HS code assigned to the item (resolve); the syntax requirements and API for a request and response to a request to verify the international facility identifier(s) for the origin of an item given an item identifier formatted in accordance with ISO 8000-115 (search); the methods used to capture the data required to determine the location of manufacturer or provision of services. The following are outside the scope of this document: the methods used for the resolution of ISO 8000-115 identifier to the ISO 8000-114 data set.

Status
Published
Publication Date
03-Nov-2026
Current Stage
6060 - International Standard published
Start Date
04-Nov-2026
Completion Date
04-Nov-2026

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ISO 25500-120:2026 - Supply chain interoperability and integration — Part 120: Verification of data in support of local purchasing

Release Date:04-Nov-2026
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ISO 25500-120:2026 is an ISO standard for supply chain interoperability and integration that specifies how to format requests and replies used to verify data in support of local purchasing. It covers two message flows - resolve for harmonized system (HS) code verification and search for international facility identifier (IFI) verification - using ISO 8000-115-formatted identifiers and the industrial internet routing model.

What does ISO 25500-120:2026 specify?

ISO 25500-120:2026 specifies the syntax requirements and application protocol interface (API) for request and reply messages used to support local purchasing checks. In practice, it tells systems how to ask for item origin-related data and how to return that data in a controlled, interoperable way.

The scope covers two cases:

  • resolving an item identifier to the item’s HS code and the characteristic data needed to verify that HS code
  • searching for the IFI of the facility where an item originates, given an item identifier

The standard also covers the methods used to capture the data needed to determine the location of the manufacturer or the provider of services. The scope excludes the methods used to resolve an ISO 8000-115 identifier to the ISO 8000-114 data set.

The document is organized into scope, normative references, terms and definitions, item origin processes, conformance, and one informative annex.

AnnexWhat it covers
ADocument identification for unambiguous identification in an open system

What are the key requirements of ISO 25500-120:2026?

ISO 25500-120:2026 defines two request-and-reply workflows in clause 4, and conformance in clause 5 depends on using those message formats correctly. The practical focus is on what data must be carried in each request, where it is sent, and what reply statuses are allowed.

Resolve: verify an item’s HS code

Clause 4.2.1 requires a resolve request to be sent to the confidential address of the respondent stored in the Prefix Name Server (PNS). The request shall include the requestor’s registered ISO 8000-115 prefix, the respondent’s registered ISO 8000-115 prefix, the ISO 8000-115-formatted item identifier, and the HS code table prefix.

Clause 4.2.2 requires the reply to be in ISO 8000-114 format. The reply carries the HS code in ISO 8000-115 format, with a prefix that identifies the HS code table, plus the characteristic data needed to verify the assigned HS code. For implementers, this means the response is not just a code value - it must also include the data that supports that code.

The allowed reply outcomes are syntax error, data error, request denied, timed out, or data in idf. Systems therefore need to handle both successful verification and explicit failure states.

Search: identify the facility of origin

Clause 4.3.1 requires a search request to go to the respondent’s confidential address in the PNS. The request shall include the requestor’s registered ISO 8000-115 prefix, the respondent’s registered ISO 8000-115 prefix, and the ISO 8000-115-formatted item identifier.

Clause 4.3.2 defines the reply options: syntax error, data error, request denied, timed out, or one or more IFI values. In practice, this lets a receiving system determine where an item was created, while also handling cases where the identifier is malformed, unknown, or not accepted.

Conformance

Clause 5 states that origin data verification conforms to the document when the requirements in 4.2.1, 4.2.2, 4.3.1, and 4.3.2 are applied. For users, that means conformance is tied to the specified request and reply behavior, not to a broader origin-resolution method.

What terms does ISO 25500-120:2026 define?

ISO 25500-120:2026 uses the vocabulary of ISO 25500-2, and these terms are central to the document:

  • Harmonized system (HS) - the trade classification code used to categorize an item for purchasing and customs-related checks.
  • International facility identifier (IFI) - the identifier used to name the facility where an item originates.
  • Prefix Name Server (PNS) - the routing mechanism that directs requests and replies using registered prefixes and confidential addresses.
  • Application protocol interface (API) - the message interface that specifies how requests and replies are structured and exchanged.
  • International business registration number (IBRN) - the part of an IFI that identifies the legal entity responsible for operating the facility.
  • Natural location identifier (NLI) - the part of an IFI that identifies the facility’s physical location.
  • ISO 8000-115 identifier - the formatted identifier used in the request and reply messages specified by this standard.

Who uses ISO 25500-120:2026?

ISO 25500-120:2026 is used by organizations that need machine-readable verification of item origin data for local purchasing decisions. Typical users include procurement teams, supply chain data teams, master data managers, system integrators, and software developers building industrial internet or enterprise integration services.

It is also relevant to buyers, compliance teams, and organizations that need to verify HS codes, identify origin facilities, or route verification requests through a PNS while preserving confidential address information.

What changed in ISO 25500-120:2026 from the previous edition?

ISO 25500-120:2026 is identified as the first edition.

Which standards are used with ISO 25500-120:2026?

ISO 25500-120:2026 depends on or refers to several related standards:

  • ISO 8000-114 - provides the reply format used for HS code verification.
  • ISO 8000-115 - provides the identifier syntax and resolution requirements used throughout the request and reply messages.
  • ISO 25500-2 - supplies the terms and definitions used in the document.
  • ISO 25500-1 and ISO 25500-100 - are cited in the introduction as the basis for the industrial internet and supply chain data verification context.
  • ISO 8000-116 and ISO 8000-118 - are used in the construction of IFI, which combines the legal entity and location identifiers.
  • ISO/IEC 8824-1 and ISO 10303-1 - support the object identifier in Annex A for unambiguous document identification.

What does the ISO 25500-120:2026 document contain?

ISO 25500-120:2026 contains the message rules for two verification processes: resolving an item to an HS code and searching for the IFI of its origin facility. Clause 4 gives the request content, the reply content, and the allowed response states for both processes.

The introduction explains why origin and location matter in supply chains, including local purchasing, government requirements, and facility-level identification. Annex A gives an object identifier for open-system document identification, and the bibliography points to the standards and trade references that support the model used in the document.

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ISO 25500-120:2026 - Supply chain interoperability and integration — Part 120: Verification of data in support of local purchasing

Release Date:04-Nov-2026
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Frequently Asked Questions

ISO 25500-120:2026 is a standard published by the International Organization for Standardization (ISO). Its full title is "Supply chain interoperability and integration — Part 120: Verification of data in support of local purchasing". This standard covers: To verify data in support of local purchasing, this document specifies the requirements for formatting request types (resolve and search) and replies to those requests. The following are within the scope of this document: the syntax requirements and application protocol interface (API) for a request and response to a request for a harmonized system (HS) code formatted in accordance with ISO 8000-115 and the dataset of an item that includes the characteristic data necessary to verify the HS code assigned to the item (resolve); the syntax requirements and API for a request and response to a request to verify the international facility identifier(s) for the origin of an item given an item identifier formatted in accordance with ISO 8000-115 (search); the methods used to capture the data required to determine the location of manufacturer or provision of services. The following are outside the scope of this document: the methods used for the resolution of ISO 8000-115 identifier to the ISO 8000-114 data set.

To verify data in support of local purchasing, this document specifies the requirements for formatting request types (resolve and search) and replies to those requests. The following are within the scope of this document: the syntax requirements and application protocol interface (API) for a request and response to a request for a harmonized system (HS) code formatted in accordance with ISO 8000-115 and the dataset of an item that includes the characteristic data necessary to verify the HS code assigned to the item (resolve); the syntax requirements and API for a request and response to a request to verify the international facility identifier(s) for the origin of an item given an item identifier formatted in accordance with ISO 8000-115 (search); the methods used to capture the data required to determine the location of manufacturer or provision of services. The following are outside the scope of this document: the methods used for the resolution of ISO 8000-115 identifier to the ISO 8000-114 data set.

ISO 25500-120:2026 is classified under the following ICS (International Classification for Standards) categories: 35.240.63 - IT applications in trade. The ICS classification helps identify the subject area and facilitates finding related standards.

ISO 25500-120:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


International
Standard
ISO 25500-120
First edition
Supply chain interoperability and
2026-11
integration —
Part 120:
Verification of data in support of
local purchasing
Interopérabilité et intégration dans la chaîne
d'approvisionnement —
Partie 120: Vérification des données à l'appui de la localisation
d'achat
Reference number
© ISO 2026
All rights reserved.
This ISO publication is protected by copyright and is owned by ISO and/or its licensors.
The content of this ISO publication is provided under licence, not sold. Use is subject to the applicable licence terms issued by ISO,
an ISO member body, or an authorized third-party distributor.
Except as required for implementation or expressly permitted by a separate licence, no part of this ISO publication may be
reproduced, distributed, modified, used, or made available in any form or by any means – electronic or mechanical, including
photocopying, scanning, recording, or posting on internal or external digital platforms.
Any use beyond the scope of the granted rights is prohibited and may result in legal action.
ISO copyright office
CP 401 • CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Item origin: resolution and search processes . 2
4.1 General .2
4.2 Resolve item identifier to origin data: request and reply for the item HS code .2
4.2.1 Request to resolve an item identifier to the item’s HS .2
4.2.2 Reply to request to resolve an item identifier to the item’s HS .2
4.3 Search item origin data: request and reply for international facility identifier .2
4.3.1 Request to search for IFI where item originates given item’s ISO 8000-115
identifier .2
4.3.2 Reply to request to search for IFI where item originates given item’s ISO 8000-
115 identifier .3
5 Conformance . 3
Annex A (informative) Document identification . 4
Bibliography . 5

iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO technical committees. Each member body interested in a subject for which a technical committee
has been established has the right to be represented on that committee. International organizations,
governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO’s adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 184, Automation systems and integration,
Subcommittee SC 5, Interoperability, integration, and architectures for enterprise systems and automation
applications.
A list of all parts in the ISO 25500 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
Introduction
At its most basic, labour and materials come together at a facility to create products and waste as illustrated
in Figure 1.
Figure 1 — Basic production process
For materials, products, or services to be legally exchanged, they must be identified and described. In
addition, for the purposes of supply chain management, the physical location of the origin of materials or
products and the performance of services and the location of the legal entity controlling the production
or distribution process both need to be taken into consideration. This is enabled by an international
facility identifier (IFI) that captures both by combining the ISO 8000-116 formatted international business
registration number (IBRN) of the legal entity responsible for the operation of the facility, followed by a pipe
character (U+0007C) as a separator, and then the ISO 8000-118 formatted natural location identifier (NLI)
of the facility. The ISO 8000-115 prefix for this identifier is ISO.IFI which is then followed by a colon and the
IFI.
Location is important in respect to compliance with government regulations but also to insurance and local
taxation. Insurance relies on location to determine liability. For example, in the case of a pallet being moved
from a warehouse into a waiting truck, the threshold of the loading dock is the point of demarcation: when
the pallet crosses the point of demarcation legal liability for damage to the content of the pallet is transferred
from the insurer of warehouse to the insurer of the truck.
The best practice in purchasing is to buy an item at the lowest total cost including taxes, fees, and
transportation. There are many other and frequently competing factors that need to be taken into
consideration in creating a cost effective and resilient supply chain that minimizes the short term or
longer-term risks associated with the potential for supply chain disruption. One of these considerations
is government local purchasing requirements. As part of their economic development or security
strategies, many governments seek to encourage the sourcing of goods and services from local suppliers
and occasionally from specific socioeconomic categories of suppliers (small business, minority, women or
veteran owned businesses). Governments can also control or influence international purchasing through
the imposition of sanctions, tariffs and quotas as well as non-tariff barriers that can be applied not only to
countries but also to specific geographic regions or to specific suppliers.
Global trade is regulated through multilateral trade agreements. The General Agreement on Tariffs and Trade
(GATT) provided the rules for much of world trade from 1948 to 1994 and the World Trade Organization
(WTO), created on 1995-01-01, expanded the GATT that mainly dealt with trade in goods, to cover trade in
services and intellectual property.
There are two concepts that are central to the WTO: first, the country of origin and, secondly, the World
Customs Organization (WCO) harmonized system (HS) codes.
a) Rules of origin: Country
...