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BRDfortheOfgemSwitchingProgrammeSustainingChangetoXoservesystems
1
BusinessRequirementsDocument-
OfgemSwitchingProgramme
SustainingChangetoXoserveSystems
Author: XoserveVersion: 0.1Date: 06/12/2017
BRDfortheOfgemSwitchingProgrammeSustainingChangetoXoservesystems
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TableofContents:
1. BackgroundandContext 2. TopicAreas 3. BusinessRequirementsperTopicArea4. NonFunctionalRequirements5. Appendices6. DefinedTermsandGlossary7. DocumentControl
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1. BackgroundandContext1.1IntroductiontotheOfgemSwitchingProcess
ThissectionprovidesahighleveloverviewoftheOfgemSwitchingProgrammewithregardstoitsimpactsuponthegasindustry,UKLink,Shipper,GTandiGTsystems.Thepurposeofthissectionistosetthesceneforthemodification0630ReviewGroupandhelpthegroupunderstanditsscope.
TheOfgemSwitchingProgrammeaimstoimplementasuiteofsystemsdesignedtodeliverfaster(nextday)morereliableswitching.AnewsystemtheCentralRegistrationSystem(CSS)willprovidetheswitchingfunctionalityforgasandelectricityswitches.Wherepossible,gasandelectricityswitchingprocesseswillbeharmonised.
Forgas,Suppliers,notShippers,willinitiateswitchrequestsontheCSS.CSSwillprovideoutputstoUKLinkandShipperstomanageShipperregistrationtotheSupplyPoint.UKLinkwillstillholdaSupplyPointRegisterforGTsandiGTs.TheSupplier’sShipperwillstillberegisteredtotheSupplyPointforthepurposeofgassettlementandotheractivities.
GasTransporters(GTsandiGTs)willretainresponsibilityfortheSupplyMeterPointlifecycle-thecreationandeventualendoftheservicepipeintheground.SupplyMeterPointswillbecreatedonUKLinkandwillbesenttotheCSStoenabletheregistrationprocessesandswitchingactivitiestooccur.
ThenameofthethingthatisbeingswitchedintheCSS(astobedefinedinthenewRetailEnergyCode)istheRegistrableMeasurementPoint(RMP)–forcomparisonpurposesthenameofthethingswitchedbetweenShippersintheUNCistheSupplyMeterPointorSupplyPoint.ThereferencenumberofaRMPistheSupplyMeterPointReferenceNumber(MPRN).TheMPRNisusedastheuniqueidentifierforrelevantUKLinktransactions.FortransactionsontheCSStheuniqueidentifierofaRMPistheMPRN.ThesamereferencenumberisbeingusedtoensureUKLinkandtheCSSrecordscanbecorrectlysynchronised,andtoallowtransactionsinCSStobereflectedintransactionsinUKLink.
WhenaSuppliersubmitsaregistration,switch,orwithdrawaltransactionontheCSS,thetransactionwillincludetheSupplier’sShipper.AsthetransactionprogressesonCSS,notificationsareprovidedtotherelevantShippersandUKLink.WhenthetransactionresultsinaSupplierregistrationactivitytoaRMPthetransactionwillresultinthecorrespondingShipperregistrationactivityattheSupplyPointinUKLink.Thiswillensuretheregistrationactivitiesareco-ordinatedacrossthetwosystems.
ThefollowingdiagramsetsouttheOfgemSwitchingProgrammeinthreelevels.ThefirstisthecoreCSS,thesecondisthechangesrequiredtobemadeinUKLinktoenabletheCSStowork,thethirdareconsequentialchangesasaresultoftheCSSwhicharerequiredtosustaingasandUKLinkoperations.Thefourthbox,theMarketIntelligenceService(MIS)isshownassupportingallthreelevels.TheMISisnotbeingdeliveredaspartoftheOfgemSwitchingProgramme,itisbeingdevelopedunderajointgasandelectricityworkinggroup.
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1.2 OfgemSwitchingProgramme‘Core’ChangesOfgemSwitchingProgrammeCoreChangeswillberequiredtodeliverchangesasaresultoftheprogrammeandtheintroductionoftheCSS.Thesearesubstantialchangestodeliverthefunctionalrequirementsoftheprogramme,includingchangestoXoservesystems,forexample,fileflowsfromXoservetotheCSS.ThesechangeswillbemanagedthroughtheOfgemSwitchingProcessthroughaprojectteamwithinXoserve.Thesechangeswillnotbefurtherexploredwithinthisdocumenthowevermaybereferredto.Thechangeswillbecoveredwithinthedocument[OfgemSwitchingProgrammeCoreChanges]
1.3 OfgemSwitchingProgrammeConsequentialChangestoXoserveSystemsOfgemSwitchingprogrammeConsequentialChangeswillberequiredtodeliverchangesasaresultoftheprogrammeandtheintroductionoftheCSS.ThesearesubstantialchangesthatareasaresultoftheprogrammewhichimpactonXoservesystemsandprocesses,forexample,withintheOfgemSwitchingprocessitislikelytheobjectionprocesswillbedecommissionedthereforetherewillbefileflowsdecommissionedandprocessesrequiringamendment.ThesechangeswillbemanagedthroughtheOfgemSwitchingProcessthroughaprojectteamwithinXoserve.Thesechangeswillnotbefurtherexploredwithinthisdocumenthowevermaybereferredto.Thechangeswillbecoveredwithinthedocument[OfgemSwitchingProgrammeConsequentialChanges]
1.4 OfgemSwitchingProgrammeSustainingchangetoXoserveSystemsTheareaofworkforthe0630ReviewGroupisatlevelthree.Thisdocumentwillgoontorecordeachtopicarea,requirements,solutionoptionsetc.toenabletheindustrytoselecttheways
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forward.OwingtothechangingnatureoftheOfgemSwitchingProcessthisdocumentisdesignedtoevolvethroughouttheiterationsandadditionalchangesthatmayarisethroughtheprogramme.
1.5 RelatedDocumentsAdditionalinformationandbackgroundtotheOfgemSwitchingProgrammecanbefoundontheOfgemwebsitebyusingthefollowinglink:
XXXX
1.6ScopeInScope:
1. SustainingchangesrequiredasaresultofOfgemSwitchingprogramme2. ChangesrequiredforUNCparties3. Considerationofcrosscodeimpacts
OutofScope:1. CorechangesfromtheOfgemSwitchingProgramme2. ConsequentialchangesasaresultoftheOfgemSwitchingProgramme
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2.0TopicAreas
No Title Impact 0630ReviewGroupConsideration
ImpactedParties
UNCsection
Dateidentified
ActionsRequiredfor0630R
1Transportation
Charges
HowShipperUsersmayobtaindetailsof
relevanttransportationcharges.TheCSS
switcheventdoesnotenvisagetheuseof
theSupplyPointNominationprocess.
Potentialtoexplorewhether
thisisstillrequiredandan
alternativemethodto
completethisprocess.
Shippers,
DNs
02/11/17Confirm
requirements
2Opening
MeterRead
HowandwhentheincomingShipperUser
isprovidedwiththelatestrecordedMeter
InformationontoUKLinkinorderto
validatetheOpeningMeterReadingbefore
submission.
Currentlycertainfileflowswill
notbeissuedatachangeof
suppliereventforexamplethe
TRFwhichcontainsthis
information.
Shippers
02/11/17
Considerationof
optionstoshare
thisinformation
3Gemini
Updates
Thetimingofthetransferofinformation
betweenUKLinkandGemini.Aswitch
couldoccuraslateasD-1at17:00however
thetransferofswitchinginformationfrom
UKLinktoGemini
currentlytakesplaceatD-2.
Thetimelinessofthetransfer
andinformationtobe
submittedtoGemini
Shippers,
NTS
02/11/17
Considerationof
optionsi.e.there
awaytoflowthis
informationprior
toaswitch
4
Changeof
Supplier
required
information
HowShipperUserscanobtainandprocess
UKLinkdataitemscurrentlysubmittedto
theCDSPatachangeofShipperUser
event.Forexample–SupplyPointClass,
DailyCapacity(SOQ),HourlyCapacity
(SHQ),MeterReadingFrequency.
Noneofthemandatorydata
itemsarecurrentlypresentin
CSSflows.
Shippers
02/11/17
Considerationof
optionsi.e.a
'Shellrecord'ora
defaultsetof
values
5
Supplier/
Shipper
Relationship
Table
ThereisarequirementforaShipperand
Supplier(andpossiblyTransporter)
relationshiptabletobemaintainedthat
willfacilitatetheappointingandde-
appointingofShipperUsers.
Itislikelythatthetablewillbe
administeredwithinUKLink.Shippers
02/11/17
Toconsiderhow
thetablewill
workandbe
managed
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6Capacity
Referral
HowtomanageaCapacityReferralaspart
ofaswitch.
Thisisanormalflowfrom
ShippertoTransporter
currentlynotintheremitof
CSS;Thiscannotbepartofthe
switchevent.
Shippers,
DNs
02/11/17
Considerationof
thechangesto
theprocess
requiredoutside
ofCSS
7
Supplieror
Shipper
Change
Themanagementofaneventwherethe
SupplierchangesShipperUser.Inthis
scenariothecustomerdoesnotswitchand
theSupplierremainsthesame,butthe
SupplierupdatestheCSSwiththeirnew
ShipperUserdetails.
Alternatively,considerationneedstobe
giventothescenariowheretheShipper
staysthesamebuttheSupplierswitches.
InitiatedthroughtheCSSbut
impactsonUKLink,both
scenariosaredealtwithasa
switchbytheCSS.
Shippers
02/11/17
Considerationof
optionstoshare
thisinformation
8 MapIdentityTherecordingoftheMAPidentityagainst
theSupplyMeterpoint.
Thisisnotconsideredaspart
oftheswitchwiththeCSS
howeverneedstobeshared
andprovidedtoUKLink.
Shippers
02/11/17
Considerationof
optionstoshare
thisinformation
9
Emergency
Contact
Details
TherecordingofEmergencyContact
details.OnlargesupplypointsEmergency
contactdetailsaremandatory.
Notconsideredwithinthe
CSS,UKLinkneedstorecord
theemergencycontactdetails
andpassthemontothe
relevantNetwork.
Shippers,
DNs 02/11/17
Considerationof
optionstoshare
thisinformation
10CSSSwitch
Cancellations
CSSSwitchcancellations.Theabilityto
cancelaswitchevent.
Ifinformationhasbeen
sharedwithUKLinkhowwill
thisberetracted
Shippers,
DNs 02/11/17
Considerationof
optionshowto
reverseaswitch
11Vulnerable
CustomersVulnerableCustomers
Notconsideredwithinthe
CSS,UKLinkneedstorecord
detailsforvulnerable
customersandpassthemon
totherelevantNetwork.
Shippers,
DNs 02/11/17
Considerationof
optionstoshare
thisinformation
BRDfortheOfgemSwitchingProgramme
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*Anyrelevantcrosscodeimpactsshouldbeconsideredthroughout0630Rincluding,forexample,SmartEnergyCode(SEC)theSupplyPointAdministration
Agreement(SPAA)andtheiGTUNC.
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3.0BusinessRequirementsperTopicArea3.1Exampletemplate–onepertopicareaTitle XXXXIssuedescription DescriptionoftheissueImpactedParties CurrentProcess UNCReferences WhereapplicableBusinessProcessModelDiagram
Embeddedprocessmodel
RequirementsDescription
Requirementsofthechange
SolutionoptionsNo Description Impacts(includingUNC
reference)Considerations
1 2 3 4
Implementationtimescales
Indicativeimplementationtimeframeeg..attheimplementationofCSS,withinaRelease,outsidearelease
DevelopmentDependencies
Dependenciesonthischange
ImplementationRisks
Anyassociatedrisks
DesignConstraints AnyassociatedconstraintsDesignAssumptions
Allassumptions
TestingConsiderations
TrainingConsiderations
Costimplications
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3.2TransportationChargesTitle TransportationChargesIssuedescription DuringaSupplyPointNominationoraSupplyPointEnquirytheShipperwill
receivenotificationofthetransportationchargesapplicablefortheSupply
MeterPointwhichtheyareenquiringabout.Owingtothenatureofthepace
thataSupplyMeterPointwillswitch,SupplyPointNominationorSupplyPoint
EnquiryisnolongerapartoftheswitchprocessasoutlinedbytheCSS.Itis
proposedtheworkgroupexplorewhetherthisprocessisstillrequired.Ifsoa
solutionneedstobeagreedtoallowthisprocesstocontinueoutsideofthe
changeofSupplier.
ImpactedParties ShippersandDNs
CurrentProcess ShipperswillsubmitanS48(SMP_NOMINATION_REQ)recordrequesttothe
CDSPwhichrequeststhetransportationcharges.Aresponserecord,theS64
(OFFER_DETAILS)isprovidedtotheShipperwhichdetailsthetransportation
chargesalongsideotherdataitems.AlternativelyforaSupplyPointEnquiry
theS47(SUPPLY_POINT_ENQUIRY_REQ)recordwillbesenttotheCDSPand
S59(ACCEPT_SMP_ENQUIRY)recordissuedinresponse.TheSupplierand
Shipperliaisewithregardstothisinformationandacontractisestablished
withthecustomer.TheswitcheventistheninitiatedbytheShipperwiththe
CDSP.
UNCReferences TPDG.1.16,TPDG.2.1
BusinessProcessModelDiagram
125262- 2.07 Manage Contract Nomination.pdf
RequirementsDescription
• ForShipperUserstobeabletoaccesstransportationcharges
SolutionoptionsNo Description Impacts(includingUNC
reference)Considerations
1 Transportationchargestobe
published
Transportationchargeswillbe
visible–thiscouldhave
commercialimplications
• Wheretopublishthe
transportationcharges,
whethertheseneedto
besecure
2 Assessmentacrossthe
industrythatthe
nominationsenquiryprocess
isstillapplicable
Nonominationenquiryprocess
ifremoved
• Implicationsof
removingthe
nominationenquiry
process
3 AnAPIsolutioncouldbe
developedtoallowthe
sharingofthetransportation
charges
Shipperswillbeabletoobtain
transportationcharges
howeveranewAPIservicewill
needtobedeveloped
• Implicationsofthenew
service
Implementationtimescales
�CanbeimplementedaftertheCSSimplementationdate
�ImplementationupontheCSSimplementationdate
�ImplementationpriortotheCSSimplementationdate
MaybeimplementedindependentlyoftheCSS.
Development Noneidentified
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DependenciesImplementationRisks
Noneidentified
DesignConstraints Shouldtheinformationberequiredtobeconfidentialaccesswillneedtobe
grantedtospecificUsers
DesignAssumptions
• Itisassumedthetransportationchargesarestillrequired
• Itisassumedtheinformationneedstoremaincommerciallyconfidential
• Itisassumednosystemchangestoimplementthischangehoweversome
recordsmaybedecommissionedbasedonthesolutionoption
TestingConsiderations
Noneidentified
TrainingConsiderations
Noneidentified
Costimplications Noneidentified
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3.3OpeningMeterRead
Title OpeningMeterReadIssuedescription DuringaSwitchEventtheincomingShipperisobligedunderUNCtoprovidean
openingreadtotheCDSP.TheincomingShipperneedstovalidatetheopening
readtheyhaveobtained,whetheritisanactualoranestimate,basedonthe
lastreadandthelastreadingdateonUKLink.Thisisnotconsideredwithinthe
CSSthereforeanalternatemeansofobtainingthisreadneedstobe
considered.
ImpactedParties Shippers
CurrentProcess DuringachangeofSupplierthelatestmeterreadingandthereaddateis
providedtotheIncomingShipperwithintheS15(TRANSFER_OF_OWNERSHIP)
record.TheShipperusesthisreadtovalidatetheopeningreadbefore
submittingthereadtotheCDSP.ThisisprovidedwithintheTRF(SupplyMeter
PointOwnershipNotificationFile)atD-2.
UNCReferences TPDM.5.13
BusinessProcessModelDiagram
RequirementsDescription
• ThereisarequirementfortheincomingShippertoreceivethelast
readandreaddateonUKLinktovalidatetheopeningreadbefore
submission
SolutionoptionsNo Description Impacts(includingUNC
reference)Considerations
1 Aprocessisestablished
wherebyShipperssendflows
betweeneachotherofthe
lastreadandreaddate
Noimpactoncoresystem
Allbasedonrelationships
betweenShippersandhavinga
meanstocommunicate
• Howtocommunicate
betweenShipper
organisations
• Timelinessof
informationprovided
2 Thisinformationisrequested
outsideoftheswitchevent
withinanewrecordandUNC
timeframesextended
Newrecords,systemimpacts
onXoserveandShippers
ChangetoUNC
• Contentofnewrecord
• Timelinessofthe
information
Implementationtimescales
�CanbeimplementedaftertheCSSimplementationdate
�ImplementationupontheCSSimplementationdate
�ImplementationpriortotheCSSimplementationdate
DevelopmentDependencies
Noneidentified
ImplementationRisks
Noneidentified
DesignConstraints
DesignAssumptions
• Itisassumedthelastreadarestillrequiredassoonaspossibleaftera
switchtoallowtheopeningreadtobesubmittedwithinthespecifiedtime
(15days)
TestingConsiderations
Noneidentified
Training Noneidentified
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ConsiderationsCostimplications Systemdevelopments
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4.0Non–FunctionalBusinessRequirements
[Tobeinserted]
BRDfortheOfgemSwitchingProgramme
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5.0Appendices
[Tobeinserted]
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6.DefinedTermsandGlossary
Term/Acronym DefinitionSHQ SupplyHourlyQuantity
SOQ SystemOfftakeQuantity(dailyofftake)
SwitchEvent Uponfirstregistration
AchangeofSupplier/ShipperassetoutbytheCSS
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7.DocumentControl7.1VersionHistoryVersion Status Date Author(s) SummaryofChanges
0.1 InitialDraft 06/12/17 Xoserve OSPSustainingChangetoXoserve
SystemsBRDcreation
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