I E C 62 5-451 -4 ® Edition 2.0 201 7-04 I N TE RN ATI ON AL S TAN D ARD colour i n sid e F ram ework for en erg y m arke t com m u n i cati on s – P art 451 -4: S e ttl em en t an d recon ci l i ati on bu s i n e ss proces s , textu al an d IEC 62325-451 -4:201 7-04(en) as se m bl y m od e l s for E u rope an m arke t T H I S P U B L I C AT I O N I S C O P YRI G H T P RO T E C T E D C o p yri g h t © I E C , G e n e v a , S wi tz e rl a n d All rights reserved Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IEC's member National Committee in the country of the requester If you have any questions about I EC copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or your local I EC member National Committee for further information IEC Central Office 3, rue de Varembé CH-1 21 Geneva 20 Switzerland Tel.: +41 22 91 02 1 Fax: +41 22 91 03 00 info@iec.ch www.iec.ch Ab ou t th e I E C The I nternational Electrotechnical Commission (I EC) is the leading global organization that prepares and publishes I nternational Standards for all electrical, electronic and related technologies Ab o u t I E C p u b l i ca ti o n s The technical content of IEC publications is kept under constant review by the IEC Please make sure that you have the latest edition, a corrigenda or an amendment might have been published I E C Catal og u e - webstore i ec ch /catal og u e The stand-alone application for consulting the entire bibliographical information on IEC International Standards, Technical Specifications, Technical Reports and other documents Available for PC, Mac OS, Android Tablets and iPad I E C pu bl i cati on s s earch - www i ec ch /search pu b The advanced search enables to find IEC publications by a variety of criteria (reference number, text, technical committee,…) It also gives information on projects, replaced and withdrawn publications E l ectroped i a - www el ectroped i a org The world's leading online dictionary of electronic and electrical terms containing 20 000 terms and definitions in English and French, with equivalent terms in additional languages Also known as the International Electrotechnical Vocabulary (IEV) online I E C G l os sary - s td i ec ch /g l oss ary 65 000 electrotechnical terminology entries in English and French extracted from the Terms and Definitions clause of IEC publications issued since 2002 Some entries have been collected from earlier publications of IEC TC 37, 77, 86 and CISPR I E C J u st Pu bl i s h ed - webstore i ec ch /j u stpu bl i sh ed Stay up to date on all new IEC publications Just Published details all new publications released Available online and also once a month by email I E C C u stom er S ervi ce C en tre - webstore i ec ch /csc If you wish to give us your feedback on this publication or need further assistance, please contact the Customer Service Centre: csc@iec.ch I E C 62 5-451 -4 ® Edition 2.0 201 7-04 I N TE RN ATI ON AL S TAN D ARD colour i n sid e F ram ework for en erg y m arket com m u n i cati on s – P art 451 -4: S ettl em e n t an d recon ci l i ati on bu s i n e ss proces s , textu al an d as sem bl y m od e l s for E u ropean m arket INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.200 ISBN 978-2-8322-41 45-5 Warn i n g ! M ake s u re th a t you ob tai n ed th i s p u b l i cati on from an au th ori zed d i stri b u tor ® Registered trademark of the International Electrotechnical Commission –2– I EC 62325-451 -4: 201 © I EC 201 CONTENTS FOREWORD I NTRODUCTI ON Scope Norm ative references Terms and definitions Document contextual m odel and message assem bl y m odel basic concepts 1 Overview 1 European style m arket package structure From the European style m arket profile to the docum ent contextual model 4 From the docum ent contextual model to the m essage assem bl y m odel 4 From the assem bl y model to the XML schem a The settlement and reconciliation business process Balance responsible party and settlement Overall business context Use cases Process flow 5 Business rules for the settlement and reconciliation process 20 5 General 20 5 Attributes area_Domain mRI D and dom ain.m RI D and quantity 21 5 Dependency m atrix for type, processType and businessType 21 5 Dependency of attributes of the Tim eSeries 22 5 Rules governing the Point class 23 5 Attribute price amount 23 Contextual and assembl y models 24 Energy account contextual model 24 Overview of the m odel 24 I sBasedOn relationships from the European style m arket profile 24 Detailed Energy account contextual model 25 Energy account assembly m odel 33 Overview of the m odel 33 2 I sBasedOn relationships from the European style market profile 35 Detailed Energy account assembl y m odel 35 Prim itives 39 Datatypes 39 6 Enumerations 48 XML schem a 48 XML schem a URN namespace rules 48 Code list U RN namespace rules 49 URI rules for m odel docum entation 49 Datatype 49 Class 49 3 Attribute 50 Association end role name 50 EnergyAccount_M arketDocument schem a 50 Schema Structure 50 Schema description 53 I EC 62325-451 -4: 201 © I EC 201 –3– Bibliograph y 59 Figure Figure Figure Figure Figure Figure Figure Figure Figure – I EC 62325-450 modelling fram ework – Overview of European style m arket profile dependency – Balance responsible party relations – Settlement/reconciliation use case – Sequence diagram of the inform ation flow – Energ y account contextual m odel 24 – Energ y account assembl y model 34 – Energ yAccount_MarketDocument XML Schema Structure /2 51 – Energ yAccount_MarketDocument XML Schema Structure 2/2 52 Table – Dependency table for type, processType and businessType 22 Table – Dependency table for TimeSeries attributes 23 Table – Dependency table for price amount attribute 23 Table – I sBasedOn dependency 24 Table – Attributes of Energ y account contextual model: : Energ yAccount_MarketDocument 25 Table – Association ends of Energy account contextual model: : Energ yAccount_MarketDocum ent with other classes 26 Table – Attributes of Energ y account contextual m odel: : Currency_U nit 26 Table – Attributes of Energ y account contextual model:: Dom ain 27 Table – Attributes of Energ y account contextual model: : MarketAgreement 27 Table – Attributes of Energy account contextual model: : MarketEvaluationPoint 27 Table 1 – Attributes of Energy account contextual model: :M arketParticipant 27 Table – Association ends of Energ y account contextual model: : MarketParticipant with other classes 28 Table – Attributes of Energy account contextual model: :M arketRole 28 Table – Attributes of Energy account contextual model: :M easure_U nit 28 Table – Attributes of Energy account contextual model: : Party_MarketParticipant 28 Table – Attributes of Energy account contextual m odel:: Point 29 Table – Association ends of Energ y account contextual m odel :: Point with other classes 29 Table – Attributes of Energy account contextual model: : Price 30 Table – Attributes of Energy account contextual model: : Process 30 Table 20 – Attributes of Energy account contextual model: :Quantity 30 Table 21 – Attributes of Energy account contextual model: :Reason 31 Table 22 – Attributes of Energy account contextual model: : Series_Period 31 Table 23 – Association ends of Energ y account contextual model: : Series_Period with other classes 31 Table 24 – Attributes of Energy account contextual model::Tim e_Period 31 Table 25 – Attributes of Energy account contextual model: :Tim eSeries 32 Table 26 – Association ends of Energy account contextual m odel: :Tim eSeries with other classes 32 Table 27 – I sBasedOn dependency 35 –4– I EC 62325-451 -4: 201 © I EC 201 Table 28 – Attributes of Energy account assembly model: : EnergyAccount_MarketDocum ent 35 Table 29 – Association ends of Energ y account assembly model: : Energ yAccount_MarketDocum ent with other classes 36 Table 30 – Attributes of Energy account assembly m odel: : Point 36 Table 31 – Association ends of Energ y account assembly m odel: : Point with other classes 37 Table 32 – Attributes of Energy account assembly m odel: : Reason 37 Table 33 – Attributes of Energy account assembly m odel: : Series_Period 38 Table 34 – Association ends of Energ y account assembly m odel: : Series_Period with other classes 38 Table 35 – Attributes of Energy account assembly m odel: :TimeSeries 38 Table 36 – Association ends of Energ y account assembly m odel: : Tim eSeries with other classes 39 Table 37 – Attributes of ESMPDataTypes:: Action_Status 40 Table 38 – Attributes of ESMPDataTypes:: ESM P_DateTim eI nterval 40 Table 39 – Attributes of ESMPDataTypes:: Am ount_Decim al 40 Table 40 – Restrictions of attributes for ESMPDataTypes:: Am ount_Decimal 40 Table 41 – Attributes of ESMPDataTypes:: AreaI D_String 41 Table 42 – Restrictions of attributes for ESMPDataTypes:: AreaI D_String 41 Table 43 – Attributes of ESMPDataTypes:: BusinessKind_String 41 Table 44 – Attributes of ESMPDataTypes:: ClassificationKind_String 41 Table 45 – Attributes of ESMPDataTypes:: CurrencyCode_String 42 Table 46 – Attributes of ESMPDataTypes:: EnergyProductKind_String 42 Table 47 – Attributes of ESMPDataTypes:: ESM P_DateTim e 42 Table 48 – Restrictions of attributes for ESMPDataTypes:: ESM P_DateTim e 42 Table 49 – Attributes of ESMPDataTypes:: ESM PVersion_String 43 Table 50 – Restrictions of attributes for ESMPDataTypes:: ESM PVersion_String 43 Table 51 – Attributes of ESMPDataTypes:: I D_String 43 Table 52 – Restrictions of attributes for ESMPDataTypes:: I D_String 43 Table 53 – Attributes of ESMPDataTypes:: MarketRoleKind_String 44 Table 54 – Attributes of ESMPDataTypes:: MeasurementPointI D_String 44 Table 55 – Restrictions of attributes for ESMPDataTypes:: MeasurementPointI D_String 44 Table 56 – Attributes of ESMPDataTypes:: M easurementU nitKind_String 44 Table 57 – Attributes of ESMPDataTypes:: MessageKind_String 45 Table 58 – Attributes of ESMPDataTypes:: Obj ectAggregationKind_String 45 Table 59 – Attributes of ESMPDataTypes:: PartyI D_String 45 Table 60 – Restrictions of attributes for ESMPDataTypes:: PartyI D_String 45 Table 61 – Attributes of ESMPDataTypes:: Position_I nteger 46 Table 62 – Restrictions of attributes for ESM PDataTypes: : Position_I nteger 46 Table 63 – Attributes of ESMPDataTypes:: ProcessKind_String 46 Table 64 – Attributes of ESMPDataTypes:: Quality_String 46 Table 65 – Attributes of ESMPDataTypes:: ReasonCode_String 47 Table 66 – Attributes of ESMPDataTypes: : ReasonText_String 47 Table 67 – Restrictions of attributes for ESMPDataTypes:: ReasonText_String 47 I EC 62325-451 -4: 201 © I EC 201 –5– Table 68 – Attributes of ESMPDataTypes:: Status_String 47 Table 69 – Attributes of ESMPDataTypes:: YM DH M_DateTime 48 Table 70 – Restrictions of attributes for ESM PDataTypes: : YMDH M_DateTim e 48 –6– I EC 62325-451 -4: 201 © I EC 201 INTERNATI ONAL ELECTROTECHNI CAL COMMISSI ON F R AM E WO RK F O R E N E RG Y M ARKE T C O M M U N I C AT I O N S – P a rt -4 : S e tt l e m e n t a n d re c o n c i l i a ti o n b u s i n e s s p ro c e s s , c o n te x tu a l a n d a s s e m b l y m o d e l s fo r E u ro p e a n m a rk e t FOREWORD ) The I nternati on al Electrotechni cal Comm ission (I EC) is a worl d wid e organization for stan dardization com prisin g all n ation al el ectrotechnical comm ittees (I EC National Comm ittees) The object of I EC is to prom ote internati onal co-operation on all q uestions concerni ng stand ardi zati on in the el ectrical an d electronic fi elds To this en d and in additi on to other acti vities, I EC pu blish es I nternational Stan dards, Techn ical Specificati ons, Technical Reports, Publicl y Avail abl e Specificati ons (PAS) an d Gu ides (h ereafter referred to as “I EC Publication(s)”) Th ei r preparation is entrusted to tech nical comm ittees; any I EC N ational Comm ittee interested in the subj ect dealt with m ay partici pate in this preparatory work I nternational, governm ental an d n on governm ental organ izations l iaising with th e I EC also participate i n this preparation I EC collaborates closel y with the I ntern ational Organi zation for Stand ardization (I SO) in accordance with ditions determ ined by agreem ent between th e two organi zati ons 2) The form al decisions or ag reem ents of I EC on tech nical m atters express, as n early as possible, an i nternati onal consensus of opi nion on the rel evant subjects since each technical com m ittee has representati on from all interested I EC N ational Com m ittees 3) I EC Publications have the form of recom m endations for intern ational use an d are accepted by I EC National Com m ittees in that sense While all reasonable efforts are m ade to ensure that the tech nical content of I EC Publications is accu rate, I EC cann ot be h eld responsi ble for th e way in which th ey are used or for an y m isinterpretation by an y en d u ser 4) I n order to prom ote intern ational u niform ity, I EC National Com m ittees und ertake to apply I EC Publications transparentl y to the m axim um extent possible i n their national an d regi on al publicati ons Any d ivergence between an y I EC Publication and the correspondi ng national or regi on al publicati on sh all be clearl y in dicated in the latter 5) I EC itself d oes n ot provi de an y attestation of conform ity I n dependent certificati on bodies provi de conform ity assessm ent services and, in som e areas, access to I EC m arks of conform ity I EC is not responsi ble for an y services carri ed out by ind ependent certification bodi es 6) All users shou ld ensure that th ey h ave the l atest editi on of thi s publicati on 7) No liability shall attach to I EC or its directors, em ployees, servants or ag ents inclu din g in divi du al experts an d m em bers of its tech nical com m ittees and I EC Nati onal Com m ittees for any personal i nju ry, property d am age or other dam age of any n ature whatsoever, whether di rect or indirect, or for costs (includ i ng leg al fees) and expenses arisi ng out of the publ ication, use of, or relian ce upon, this I EC Publicati on or any other I EC Publications 8) Attention is drawn to th e N orm ative references cited in th is publ ication Use of the referenced publ ications is indispensable for the correct applicati on of this publication 9) Attention is drawn to the possibility that som e of the elem ents of this I EC Publication m ay be the su bject of patent rig hts I EC shall not be held responsibl e for identifyi ng any or all such patent ri ghts I nternational Standard I EC 62325-451 -4 has been prepared by I EC technical comm ittee 57: Power systems m anagem ent and associated information exchange This second edition cancels and replaces the first edition published in 201 This edition constitutes a technical revision This edition includes the following significant technical changes with respect to the previous edition: a) Rem oval of the attributes “quantity” and “secondary quantity” of the class “Point”; b) I ntroduction of the class “Quantity” from I EC 62351 -351 U ML package, with the following attributes “quantity” as mandatory and “quality” as optional, and create two association between the class “Quantity” and the class “Point” with the role “I n_Quantity” and “Out_Quantity” I EC 62325-451 -4: 201 © I EC 201 –7– c) I ntroduction of the class “Reason” from I EC 62351 -351 U ML package, with the following attributes “code” as m andatory and “text” as option al, and create an association * from the class “Reason” to the class “Point” with the role “Reason” The text of this I nternational Standard is based on the following documents: CDV Report on votin g 57/1 737/CDV 57/1 804/RVC Full information on the voting for the approval of this I nternational Standard can be found in the report on voting indicated in the above table This docum ent has been drafted in accordance with the I SO/I EC Directives, Part A list of all parts in the I EC 62325 series, published under the general title Framework for energy market communications , can be found on the I EC website The com mittee has decided that the contents of this document will remain unchanged until the stability date indicated on the I EC website under "http://webstore iec.ch" in the data related to the specific docum ent At this date, the document will be • • • • reconfirmed, withdrawn, replaced by a revised edition, or amended A bilingual version of this publication m ay be issued at a later date I M P O R T AN T th a t it – Th e ' co l ou r i n s i d e' tai n s u n d e rs t a n d i n g c o l o u r p ri n t e r of c o l o u rs i ts wh i c h c o n te n ts l og o a re U s e rs on th e co ve r p ag e o f th i s c o n s i d e re d sh ou ld to t h e re fo re be p u b l i c a ti o n u s e fu l p ri n t th i s fo r i n d i cate s th e d o cu m en t c o rre c t u sin g a –8– I EC 62325-451 -4: 201 © I EC 201 INTRODUCTION This standard is one of the I EC 62325 series which define protocols for deregulated energ y market communications The principal obj ective of the I EC 62325 series is to produce standards which facilitate the integration of m arket application software developed independentl y by different vendors into a market m anagem ent system, between market management system s and m arket participant system s This is accom plished by defining message exchanges to enable these applications or systems access to public data and exchange information independent of how such information is represented internall y The com mon inform ation m odel (CI M) specifies the basis for the sem antics for this m essage exchange The European style m arket profile (ESMP) is based on different parts of the CI M I EC standard The CI M is defined through a series of standards, i e I EC 62325-301 , I EC 61 970301 and I EC 61 968-1 This document provides the settlem ent and reconciliation business process that can be used throughout a European style m arket This stand ard was originall y based upon the work of the European Transmission System Operators (ETSO) Task Force EDI (Electronic Data Interchange) and then on the work of the European Network of Transmission System Operators (ENTSO-E) Working Group EDI This docum ent describes the settlement and reconciliation process for wholesale markets; it is brought to the attention of the reader that it is envisaged to initiate work on a com bined reconciliation process for retail and wholesale markets – 48 – I EC 62325-451 -4: 201 © I EC 201 Table 69 – Attributes of ESM PDataTypes: : YM DHM _DateTime mult Attribute name / Attribute type [1 ] val ue Description The d ate and tim e as "YYYY-MM-DDThh: m m Z", which conform s with th e I SO 8601 UTC tim e zone DateTim e Table 70 shows all restrictions applied to the attributes of YMDH M_DateTim e Table 70 – Restrictions of attributes for ESM PDataTypes: : YM DHM _DateTime Name Constrain t val ue pattern Type OCL val ue Truncation OrRe I NV duced 6.2.6 Expression of constrain t inv: self->Pattern (((([0-9] {4})[\-] (0[1 3578]| [02] )[\-](0[1 -9] | [1 2][0-9] | 3[01 ])| ([09]{4})[\-]((0[469])| (1 ))[\-](0[1 -9]| [1 2][0-9] | 30))T(([01 ][0-9]| 2[0-3]): [0-5][09])Z)| (([1 3579][26][02468][048] | [1 3579][01 345789](0)[48]| [1 3579][01 345789][2 468][048] | [02468][048][02468][048] | [02468][1 235679] (0)[48] | [02468][1 235679][ 2468][048]| [0-9][0-9][1 3579][26])[\-](02)[\-](0[1 -9]| [0-9]| 2[0-9] )T(([01 ][0-9] | 2[03]): [0-5][09])Z)| (([1 3579][26][02468][1 235679]| [1 3579][01 345789](0)[01 235679] | [1 3579][ 01 345789][2468][1 235679] | [02468][048][02468][1 235679]| [02468][1 235679](0) [01 235679] | [02468][1 235679][2468][1 235679]| [0-9][0-9][1 3579][01 345789])[\](02)[\-](0[1 -9] | [0-9] | 2[0-8] )T(([01 ][0-9]| 2[0-3]): [0-5][0-9] )Z)) choice=gYearM onthDayHou rMi nute Enu merations The list of enum erations used for the Energ y account assem bl y m odel is as follows: • • • • • • • • • • • • • 7.1 BusinessTypeList ClassificationTypeList CodingSchemeTypeList CurrencyTypeList Energ yProductTypeList MessageTypeList ObjectAggregationTypeList ProcessTypeList QualityTypeList ReasonCodeTypeList RoleTypeList StatusTypeList UnitOfM easureTypeList XML schema XM L schema URN namespace ru les I n order to provide a generic and stable means of declaring a U RN for the European style market profile XML schemas, the namespace will be composed in the following manner: urn: iec62325.351 : tc57wg1 6: : : : I EC 62325-451 -4: 201 © I EC 201 – 49 – where: • • • • • • iec62325 351 shall be the stem of all European style market profile XML schema namespaces tc57wg1 identifies the organisation or group of organisations within the I EC that owns the obj ect being referenced I n this exam ple, this is Technical Com mittee 57, working group identifies the specific process where the object is situated, e.g the part of the I EC 62325 standards in which the XML schem a is defined, e g 451 -1 , 451 -2, 451 -3, etc identifies the electronic docum ent schem a identifies the version of the docum ent schema identifies the release of the docum ent schema Every XML schema representing an electronic document shall have a default namespace corresponding to the namespace that identifies the docum ent and respects the above U RI namespace construction Every XML schem a representing an electronic docum ent shall have a targetN am espace corresponding to the default nam espace Every XML schem a shall have an elem entForm Default as “qualified” Every XML schem a shall have an attributeFormDefault as “unqualified” C o d e l i s t U RN n a m e s p a c e ru l e s I n the case of the codelist library that shall be used for the European style market profile the URN shall be as follows u rn : e n t s o e e u : w g e d i : c o d e l i s t s U RI ru l e s fo r m o d e l d o c u m e n tati o n D a ta t yp e All the datatypes are documented in I EC 62325-351 In the case of the base datatype library that shall be used for the European style market profile, the U RI shall use the sawsdl:m odelReference as follows: h t t p : / /i e c c h /T C / < C I M - v e rs i o n - y e a r> / C I M - s c h e m a - < c i m x x > # [ d a t a t y p e - n a m e ] where: • • • is the year of the released CI M version used for generating m arket profile is the CI M version nam e [datatype-nam e] is the nam e of the CI M datatype or prim itive Exam ples: http: //iec ch/TC57/201 2/CI M -schem a-cim 6#Strin g http: //iec ch/TC57/201 2/CI M -schem a-cim 6#M on ey Cl ass I n the case of the base class library that shall be used for the European style m arket profile, the URI shall use the sawsdl:modelReference as follows: – 50 – I EC 62325-451 -4: 201 © I EC 201 h t t p : / /i e c c h /T C / < C I M - v e rs i o n - y e a r> / C I M - s c h e m a - < c i m x x > # [ c l a s s - n a m e ] where: • • • is the year of the released CI M version used for generating m arket profile is the CI M version name [class-nam e] is the name of the CI M class Exam ple: http: //iec ch/TC57/201 2/CI M-sch em a-cim 6#Tim eSeri es 3 At t ri b u t e I n the case of the base attribute library that shall be used for the European style market profile, the U RI shall use the sawsdl: modelReference as follows: h t t p : / /i e c c h /T C / < C I M - v e rs i o n - y e a r> / C I M - s c h e m a - < c i m x x > # [ c l a s s - n a m e ] [ a t t ri b u t e n am e] where: • • • • is the year of the released CI M version used for generating market profile is the CI M version name [class-nam e] is the nam e of the CI M class [attribute-nam e] is the name of a class attribute Exam ple: http: //iec ch/TC57/201 2/CI M-sch em a-cim 6#Tim eSeri es product As s o c i a t i o n en d ro l e n a m e I n the case of the base association library that shall be used for the European style market profile, the U RI shall use the sawsdl:m odelReference as follows: h t t p : / /i e c c h /T C / < C I M - v e rs i o n - y e a r> / C I M - s c h e m a - < c i m x x > # [ c l a s s - n a m e ] [ a s s o c i a t i o n e n d - ro l e - n a m e ] where: • • • • is the year of the released CI M version used for generati ng m arket profile is the CI M version name [class-nam e] is the name of the CI M class [association-end-role-name] Exam ple: http: //iec ch/TC57/201 2/CI M-sch em a-cim 6#MarketDocum ent Tim eSeries 7 E n e rg y Ac c o u n t _M a rk e t D o c u m e n t s c h e m a S c h e m a S t ru c t u re Figure and Figure provide the structure of the schema I EC 62325-451 -4: 201 © I EC 201 – 51 – IEC Figu re – EnergyAccount_M arketDocument XM L Schema Structure /2 – 52 – I EC 62325-451 -4: 201 © I EC 201 IEC Figu re – EnergyAccount_M arketDocument XM L Schema Structure 2/2 I EC 62325-451 -4: 201 © I EC 201 7 – 53 – Sch em a d escri pti on I EC 62325-451 -4: 201 © I EC 201 – 55 – – 56 – I EC 62325-451 -4: 201 © I EC 201 I EC 62325-451 -4: 201 © I EC 201 – 57 – – 58 – I EC 62325-451 -4: 201 © I EC 201 I EC 62325-451 -4: 201 © I EC 201 – 59 – Bibliography I EC 61 968-1 , A pplication integration at electric utilities – System interfaces for distribution management – Part 1 : Common information model (CIM) extensions for distribution I EC 61 970-301 , Energy management system application program interface (EMS-API) – Part 301 : Common information model (CIM) base I SO/TS 5000-5: 2005, Electronic Business Extensible Markup Language (ebXML) – Part 5: ebXML Core Components Technical Specification, Version 01 (ebCCTS) UN /ECE Recomm endation 20, UN /CEFACT, Codes for units of measure used in international trade Unified Context Methodology Technical Specification _ INTERNATIONAL ELECTROTECHNICAL COMMISSI ON 3, rue de Varembé PO Box 31 CH-1 21 Geneva 20 Switzerland Tel: + 41 22 91 02 1 Fax: + 41 22 91 03 00 info@iec.ch www.iec.ch