ISO 18626:2021

SLOVENSKI STANDARD
oSIST ISO/DIS 18626:2021
01-februar-2021
Informatika in dokumentacija - Transakcije medknjižnične izposoje
Information and documentation -- Interlibrary Loan Transactions
Information et documentation -- Transactions de prêt interlibrairies
Ta slovenski standard je istoveten z: ISO/DIS 18626
ICS:
01.140.20 Informacijske vede Information sciences
35.240.30 Uporabniške rešitve IT v IT applications in information,
informatiki, dokumentiranju in documentation and
založništvu publishing
oSIST ISO/DIS 18626:2021 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST ISO/DIS 18626:2021

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oSIST ISO/DIS 18626:2021
DRAFT INTERNATIONAL STANDARD
ISO/DIS 18626
ISO/TC 46/SC 4 Secretariat: SFS
Voting begins on: Voting terminates on:
2020-12-09 2021-03-03
Information and documentation — Interlibrary Loan
Transactions
Information et documentation — Transactions de prêt interlibrairies
ICS: 35.240.30
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
This document is circulated as received from the committee secretariat.
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 18626:2020(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
©
PROVIDE SUPPORTING DOCUMENTATION. ISO 2020

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oSIST ISO/DIS 18626:2021
ISO/DIS 18626:2020(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
ISO copyright office
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

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oSIST ISO/DIS 18626:2021
ISO/DIS 18626:2020(E)

Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Messages . 2
4.1 General . 2
4.2 Request . 3
4.3 Request Confirmation . 7
4.4 Supplying Agency Message . 8
4.5 Supplying Agency Message Confirmation .10
4.6 Requesting Agency Message .11
4.7 Requesting Agency Message Confirmation .11
4.8 Complex Types .12
4.9 Closed Codes .13
4.10 Error Data .15
5 Format and transport .16
5.1 Format .16
5.2 Transport .16
5.2.1 Applications acting as initiators .16
5.2.2 Applications acting as responders.17
5.2.3 HTTP/HTTPS message headers.17
5.2.4 Data privacy protection.17
5.2.5 Character Representation .17
6 Conformance requirements .18
Annex A (informative) Information website .19
Annex B (informative) Open Codes .20
Annex C (informative) XML schemas .27
Annex D (informative) Guidelines — Use cases .28
Annex E (informative) Supplying library’s internal unique record ID .35
Annex F (informative) Profiles of ISO 18626 .36
Annex G (informative) Handling Consortia.37
Annex H (informative) Retry - negotiations between the requesting and supplying libraries .38
Bibliography .40
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oSIST ISO/DIS 18626:2021
ISO/DIS 18626:2020(E)

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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on 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 the following
URL: www .iso .org/ iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 46, Information and documentation,
Subcommittee SC 4, Technical interoperability.
This third edition of ISO 18626 cancels and replaces the second edition (ISO 18626:2017), of which it
constitutes a revision.
The main changes compared to the previous edition are as follows:
— Several elements have been added to handle identified use cases. As part of this SentVia has been
renamed DeliveryMethod, this element is now used in both the Request and Supplying Agency
messages. This is the only elimination of an element and has been done after consultation with
implementers.
— Annex B has been rewritten to clarify the use of Open Codes.
— Annex D is changed from including several use cases to one sample use case and a link to additional
use cases at the website (ref. Annex A).
— Annex F is added with guidelines about the use of profiles with ISO 18626.
— Annex G is added with guidelines about consortia.
— Annex H is added with guidelines about handling negotiations using “retry” when the supplier
cannot fulfil the first request.
— Added a RetryInfo section to SupplyingAgencyMessage, which should only be used when the Status
is RetryPossible. This section is used in conjunction with the expanded set of ReasonRetry values as
described in Annex H.
— Renamed ServiceInfo/PreferredFormat to ServiceInfo/ItemFormat and renamed DeliveryInfo/
DeliveredFormat to DeliveryInfo/ItemFormat so that we only need one Open Code list for Formats.
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— PhysicalAddress/Region has been changed from StandardCodes to free-text field to bring the
PhysicalAddress structure in line with the PhysicalAddress structure used in NCIP (to simplify
implementation).
— For requests the element PreferredEdition has been added. In 18626:2021, the element AnyEdition
will be retained to ensure backward compatibility. In the next version of the standard AnyEdition
will be deprecated in favour of PreferredEdition. It is recommended to upgrade from AnyEdition to
PreferredEdition without unnecessary delay.
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oSIST ISO/DIS 18626:2021
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Introduction
This document is intended to succeed the old ISO interlibrary lending protocol (consisting of ISO 10160,
ISO 10161-1 and ISO 10161-2). Unlike its predecessor, this document is well suited to the modern,
web-based technological environment which is based on XML and web services. Another important
difference between the two standards is that while ISO 10160 is based on an outdated 1980s model of
ILL transactions, its successor relies on and supports a modern, much simpler ILL procedure.
ISO TC 46/SC 4 made an attempt to revise ILL standards in 2007. The chosen policy — careful revision
of the existing standard — failed, since for some SC 4 P members the revision was too radical, whereas
some other P members indicated that it was not thorough enough. In order to avoid a similar deadlock,
the SC 4 plenary meeting chose a different strategy in 2012. The committee shall keep the old standard
alive as long as necessary by, e.g. making the editorial changes needed. But SC 4 also decided to start
the development of a new, Web-enabled ILL standard.
The new standard specifies three simple messages: a request, a supplying library message and
a requesting library message. The protocol is stateless, which means that there shall be no need to
maintain the interconnected state tables in the client and server applications (and the connections to the
state tables in applications behind them). Implementer experiences gathered from the previous edition
of this ILL protocol indicates that it is easier to implement than ISO 10160 and that the functionality
provided meets the requirements of libraries’ current ILL practices.
This document is the first part of a more general strategic initiative to standardize resource sharing in
ISO/TC46/SC4. As part of this intention, the editors have aligned element names, transport and XML
schema with similar functions in ANSI/NISO Z39.83 NISO Circulation Interchange Protocol.
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oSIST ISO/DIS 18626:2021
DRAFT INTERNATIONAL STANDARD ISO/DIS 18626:2020(E)
Information and documentation — Interlibrary Loan
Transactions
1 Scope
This document specifies the transactions between libraries or libraries and other agencies to handle
requests for library items and the following exchange of messages.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2108, Information and documentation — International Standard Book Number (ISBN)
ISO 3166-1, Codes for the representation of names of countries and their subdivisions — Part 1: Country code
ISO 3297, Information and documentation — International standard serial number (ISSN)
ISO 4217, Codes for the representation of currencies
ISO 8601-1, Date and time — Representations for information interchange — Part 1: Basic rules
ISO/IEC 10646, Information technology — Universal Coded Character Set
ISO 10957, Information and documentation — International standard music number (ISMN)
ISO 15511, Information and documentation — International standard identifier for libraries and related
organizations (ISIL)
ISO 26324, Information and documentation — Digital object identifier system
ISO 27729, Information and documentation — International standard name identifier (ISNI)
RFC 3629, UTF-8, a transformation format of ISO 10646
RFC 7540, Hypertext Transfer Protocol Version 2 (HTTP/2))
RFC 8141, Uniform Resource Names (URNs)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp/
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
agency
library (3.2), library-related organization (3.5) or other agencies such as an archive or a museum or a
commercial document supplier
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3.2
library
organization, or part of an organization, the main aim of which is to maintain a collection and to
facilitate, by services of a staff, the use of such documents as are required to meet the informational,
research, educational or recreational needs of its users
[SOURCE: ISO 2789:2013, definition 2.1.6]
3.3
library consortium
local, regional, or national cooperative association of libraries (3.2) that provides for the systematic
and effective coordination of the resources of school, public, academic, or special libraries, information
centres and other agencies, for improving services to the clientele of such libraries
3.4
library items
books, journals, articles, music, etc. or copies of these in physical or digital format
3.5
library-related organization
institution, company, consortium or other organization which handles ILL requests and/or receives
requested library items (3.4) on behalf of one or more libraries (3.2)
3.6
requesting agency
agency (3.1), which may send requests for library items (3.4) and receive them from the supplying
agency (3.7)
3.7
supplying agency
agency (3.1), which receives requests for library items (3.4) and delivers them to the requesting
agency (3.6)
3.8
uniform resource identifier (URI)
compact sequence of characters that identifies an abstract or physical resource
[SOURCE: ISO/IEC 12785-1:2009, definition 3.23]
3.9
uniform resource locator (URL)
subset of URIs that provide a means of locating a resource by describing its primary access mechanism
[SOURCE: ISO/IEC 12785-1:2009, definition 3.24]
3.10
uniform resource name (URN)
persistent, location-independent, resource identifier used for recognition of, and access to,
characteristics of the resource or the resource itself
[SOURCE: URN RFC 8141]
4 Messages
4.1 General
This document specifies three messages and responses to them for handling interlibrary loan
transactions:
— Request (see Table 1) and Request Confirmation (see Table 2);
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oSIST ISO/DIS 18626:2021
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— Supplying Agency Message (see Table 3) and Supplying Agency Message Confirmation (see Table 4);
— Requesting Agency Message (see Table 5) and Requesting Agency Message Confirmation (see
Table 6).
See additional information on guidelines about the use of this document in Annex D. This annex is
illustrative and does not cover all relevant use cases.
For Request, Supplying Agency Message and Requesting Agency Message, a confirmation message
is sent immediately (see 4.3, 4.5 and 4.7). The Request Confirmation message (see Table 2) is not a
positive or negative response to the request; it indicates only that the Request message has been
received. If the Request message contains problems, the Request Confirmation message shall include
Error Data (see 4.10).
Codes used in tables are as follows:
— R Repeatable;
— M Mandatory;
— CT Complex Type;
— OC Open Code List (i.e. Scheme Value Pair);
— CC Closed Code List (i.e. the code list is part of the ILL standard);
— SC Standard Code List.
Open Code Lists are predefined schemes, consisting of an enumerated list of possible values for a given
data element that should be supported by applications conformant with this document. The Open Code
Lists of values are not comprehensive and implementer groups may develop additional schemes for
these enumerated types to cover their implementation requirements. Thus, an application may choose
to support additional schemes for one or more Open Code Lists. Core lists of values to be supported by
all implementations are defined in Annex B.
The lists of values may be derived from standard lists of codes or other registries.
Standard Code Lists are based on code lists published in standards or other normative documents.
New schemes may be added to the Open Code List as described in Annex B.
Complex Types are listed and defined in 4.8.
Closed Code Lists (see 4.9) are a normative part of this document and shall be supported by applications
conformant with this document. They are similar to Open Code Lists, except that Closed Code Lists
of values are expected to be relatively comprehensive and stable. However, new closed code scheme
elements and code values may be added to the future versions of this document.
Date and time shall always be provided in the form YYYY -MM -DDThh: mm: ssZ as specified by
ISO 8601-1. When time is not significant, e.g. when a due date is given, use 23:59:59Z to indicate the
time, for example, 2013-05-15T23:59:59Z.
Use of the identifiers in Table B.1 shall be according to the referred standards: ISIL according to
ISO 15511, ISBN according to ISO 2108, ISSN according to ISO 3297, ISMN according to ISO 10957 and
DOI according to ISO 26324.
Use of the currency symbols referenced in Table 7 shall be as specified in ISO 4217.
4.2 Request
The Request contains information about the item and service requested.
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The Request is sent from the requesting agency to the supplying agency.
The Request contains some or all of the following groups of data elements as shown in Table 1.
— Header: administrative information
— BibliographicInfo: details of the item being requested
— PublicationInfo: information about the publication
— ServiceInfo: details of the service being requested
— SupplierInfo: list of potential suppliers
— RequestedDeliveryInfo: where and how to send the item
— RequestingAgencyInfo: details about the requesting agency
— PatronInfo: details about the patron
— BillingInfo: how to charge the requesting agency
Table 1 — Request
Element Definition Codes
Header Administrative information M
SupplyingAgencyId Identification of supplying library CT
(Complex Type AgencyId)
SupplyingAgencyId shall be provided except for RequestSub-
Type = PatronRequest and TransferRequest
RequestingAgencyId Identification of requesting library M
(Complex Type AgencyId) CT
ConsortialId Identification of the consortium with which the request is associated CT
(Complex Type AgencyId)
MultipleItemRequestId Identification of MultipleItemRequest
Timestamp Date and time of the transaction M
Ref. ISO 8601-1
For m at : U T C : Y Y Y Y -M M -DD T h h: m m: s s Z
RequestingAgencyRequestId Requesting library’s request identification or number M
RequestingAgencyAuthen- Authentication in supplying library system of the requesting library CT
tication (Complex Type)

BibliographicInfo Bibliographic information about the requested item M
SupplierUniqueRecordId SupplierUniqueRecordId should be used for the supplying library’s
internal unique identifier for the requested item, acquired from a
preceding automatic holdings request. If this identifier is used, there
should be no other identifiers in BibliographicInfo
More information can be found in Annex E
Title Title of the requested item
Author Author of the requested item
AuthorId ISNI Name identifier of the author
Ref.: ISO 27729
Subtitle Subtitle of the requested item
SeriesTitle Title of the series
Edition Number or name of the edition
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Table 1 (continued)
Element Definition Codes
TitleOfComponent Title of the component part (e.g. article)
AuthorOfComponent Author of the component part
Volume Volume number
Issue Issue number
PagesRequested Page from and page to
EstimatedNoPages Expected number of pages
BibliographicItemId Identification of a physical or electronic object R
(Complex Type) CT
Sponsor Person or organization sponsoring the publication
InformationSource Description of where bibliographic information was found
BibliographicRecordId Identification of a bibliographic record CT
(Complex Type) R

PublicationInfo Information about the publication
Publisher Name of the publisher
PublisherId ISNI Name identifier of the publisher
Ref.: ISO 27729
PublicationType Type of publication OC
PublicationDate Date of publication
For serials and serial articles, this should be the publication date of
the component part such as issue, not the date when the serial was
first issued
PlaceOfPublication Place of publication, e.g. a city

ServiceInfo Information about the requested service M
RequestType Type of request (new, retry or reminder) CC
If no request type is specified, the default is “new”
RequestSubType Sub type to qualify the request R
CC
RequestingAgencyPrevious- Requesting agency’s previous request number when a retry is sent.
RequestId The Retry request may include updated data based on ReasonRetry
ServiceType Type of service. Values: Copy, Loan or CopyOrLoan. If Copy is request- M
ed, then the requesting library is interested only in a copy. If Loan is CC
requested, then the requesting library is interested only in a loan. If
CopyOrLoan is requested, then the requesting library is
willing to accept either a copy or a loan
ServiceLevel Level of service OC
If the requesting library is willing and is able to accept any service
level, then the requesting library shall not include this element in
the message
ItemFormat Format of medium requested OC
If the requesting library is willing and is able to accept any format, then
the requesting library shall not include this element in the message
NeedBeforeDate The request is not relevant after the stated date/time
Ref. ISO 8601-1
For m at : U T C : Y Y Y Y -M M -DD T h h: m m: s s Z
If the requesting library is willing and is able to accept the requested
item at any time, then the requesting library shall not include this
element in the message
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Table 1 (continued)
Element Definition Codes
CopyrightCompliance The requesting library’s copyright compliance OC
AnyEdition Values Y or N. Yes for yes to any edition. No if only the specified
edition is acceptable
PreferredEdition The edition the borrower would prefer to receive. Values are request- CC
ed edition, any edition, or the most recent edition
LoanCondition Conditions for use of the item OC
Used when submitting a Request Retry, after the supplying library R
indicates there is a loan condition that shall be met
StartDate Start date for a Booking (RequestSubType)
Ref: ISO 8601-1
For m at : U T C : Y Y Y Y -M M -DD T h h: m m: s s Z
EndDate End date for a Booking (RequestSubType)
Ref: ISO 8601-1
For m at : U T C : Y Y Y Y -M M -DD T h h: m m: s s Z
Note Human readable note

SupplierInfo When a request is sent to a brokering institution, the requesting library R
may provide a list of potential suppliers (in preference order)
intended primarily for requests sent to brokers but may be used in
other circumstances as well
SortOrder Value from 1 to 99 defining the order of preference of use
SupplierCode Code defining a potential supplier CT
(Complex Type AgencyId)
SupplierDescription Textual information about supplier
BibliographicRecordId Identification of a bibliographic record used CT
(Complex Type)
CallNumber Indication of the shelf position of the resource
SummaryHoldings Textual description of summary level holdings
AvailabilityNote Information about availability

RequestedDeliveryInfo A prioritized list of suggested delivery methods, each with its own R
delivery address
SortOrder Value from 1 to 99 according to the order
Address Description of the delivery address CT
(Complex Type ElectronicAddress or PhysicalAddress)
DeliveryMethod The service via which the requested item should be sent OC
If the requesting library is willing and is able to accept any delivery
method, then the requesting library shall not include this element in
the
...