Version 2 - 05/08/2008 The AQ calculation and validation process Compiled and delivered from the xoserve AQ Team for Review Group 209 Susan Prosser & Steve

Version 2 - 05/08/2008

The AQ calculation and The AQ calculation and validation processvalidation process

Compiled and delivered from the xoserve AQ Team for Review Group 209

Susan Prosser & Steve Nunnington.

Version 2 - 05/08/2008

System Calc process

AQ Review - System Calc

Re

jec

tio

n x

os

erv

eS

ys

tem

Ca

lcx

os

erv

e A

QT

ea

mS

hip

pe

r

Has AQ beencalculated?

All Live Meterpoints start to be

calculated

Is AQ<73,200kWh?

Receive AQvalues via IX.NRQ (31st May).

Warnings reportproduced. (see

Appendix 1) CurrentAQs carried

forward.

Site >73,200.(I&C+ Threshold

Crossers)

AQ Analysis.(see Appendix 2)

New AQCalculated?

xoserveproposed AQvalue derived

Receive AQvalues via IX.

NRM / NRS (31stMay -SSP, 30th June-

LSP).

Current AQcarried forward.

Yes

No

Yes

No

Yes

No

G0 to 3.

G0 to 11.

G0 to 5. G0 to 6.

Version 2 - 05/08/2008

Warnings ReportAppendix 1

No

No

No

No

No

Yes

No

No

Warnings Report.

Warnings Report.MPQ00031



Warnings Report.RCN00001

All Live Meter Pointsstart to be calculated

Has MeterPoint been recently

re-connected - is thereenough data to

calculate?

Is there sufficient reads /consumption?

Has the Meter Point gota RSU?

Does Meter Point belongto xoserve?

Next Validation...etc.

AQ Value is calculatedfor MPRN

No AQ calculation.MPRN's AQ's isCarried Forward





Yes

Yes

Yes

No

Yes

This is an example of how M Numbers appear within the Warnings Report as part of the AQ Review.

Not all Warnings listed within this example

Version 2 - 05/08/2008

Warning Report Reasons

Reason Code and Message Text MPQ 00031 - Meter Point is owned by xoserve. AQ not calculated MPQ 00028 - Meter Point is not a part of Live Confirmation. AQ not calculated MPQ 00029 - AQ not calculated due to the application of backstop date RCN 00001 - Reconnection does not exist MPQ 00030 - Reconnection Effective date is in the relevant metered period. AQ not calculated MPQ 00025 - Meter Point not DM for whole of DM AQ Calculation Period. AQ not Calculated GNT 00001 - Gas Nomination Type does not exist MRF 00001 - Meter Reading Frequency does not exist MPQ 00015 - Calculated annual quantity is negative MRR 00001 - Meter read request does not exist CPN 00323 - Consumption starts before earliest possible start meter read date CPN 00320 - Consumption overlap. AQ not calculated MRE 00480 - AQ not calculated due to the absence of reads since the previous AQ calculation MRE 00481 - AQ not calculated due to the absence of reads since competition effective date CPN 00304 - Consumptions for Meter Point are not contiguous CPN 00321 - Negative consumption during metered period. AQ not calculated CPN 00305 - Consumption start read more than three years before Target Opening Date or less than six months before

Target End date LCV 00001 - LDZ Calorific Value does not Exist CPN 00322 - Insufficient Consumption Data to Calculate AQ (New MPRN) CPN 00318 - Consumption gap. AQ not calculated CPN 00303 - Consumption Start Date not equal to start Meter Reading date SPO 00020 - Supply Point History not contiguous over whole of relevant metered period MPC 00001 - Meter Point Configuration not found

G0 to 2.

Version 2 - 05/08/2008

AQ Team ValidationsAppendix 2

I&C Exclusions Domestic Exclusions

Remove MPRN's with Revised AQ within 20% of current AQ. (System AQ is applied)Remove MPRN's that have an MP Status of "P" Prime (Prime & Sub Manual Validation)

Remove MPRN's with Revised AQ within 50,000kwhof current AQ (System AQ is applied)Remove MPRN's that have an MP Status of "P" Prime (Prime & Sub Manual Validation)

If Spec calc AQ is within 20% of current AQ, Spec calc AQ is appliedWhere the System Calc AQ is within 20,000 kwh of Current AQ, System AQ is applied

If Spec calc AQ is within 50000kwh of current AQ, Spec calc AQ is appliedWhere the System Calc AQ is within 35% kwh of Current AQ, System AQ is applied

If FLAT stated within Meter Point address and Spec calc AQ is below 73,200kwh, System AQ is applied

Where the Spec Calc AQ is within 20,000 kwh of Current AQ, Spec calc AQ is applied

If FLAT stated within Meter Point address and both Spec and System calc AQ is less than 73,200kwh, Current AQ is carried forward

Where the Spec Calc AQ is within 35% kwh of Current AQ, Spec calc AQ is applied

If FLAT stated within Meter Point address and both Spec and System calc AQ is greater than 73,200kwh, Current AQ is carried forward Where the Spec Calc is less than 73,200kwh, Spec calc AQ is appliedWhere Meter Point has a live ETM as an asset and the Current AQ is lower than both the Spec and System calc AQ, then Current AQ is carried forward

Where Meter Point has multiple meter exchanges, the Current AQ is carried forward

Where Meter Point has a live ETM as an asset and the System AQ is lower than both the Current and Spec calc AQ, then System calc AQ is applied

Where Meter Point has a live asset that has Reading Units of 10000, the current AQ is Carried Forward

Where Meter Point has a live ETM as an asset and the Spec calc AQ is lower than both the Current and System calc AQ, then Spec calc AQ is applied

Where Meter Point has a live exchanged asset that has Reading Units of 10000, the Current AQ is carried Forward

Where Meter Point has a live ETM as an asset and both the Current and System calc AQ is less than 73,200kwh, then System calc AQ is applied

Where Meter Point has a live ETM as an asset, the Current AQ is carried forward

Where Meter Point has a live ETM as an asset and both the Current and Spec calc AQ is less than 73,200kwh, then Spec calc AQ is applied

Where Meter Point has a live echanged ETM as an asset, the Current AQ is carried forward

If both the Current AQ and System AQ has an AQ less than 150,000kwh, System AQ is applied

Where Meter Point has erroneous readings (o's, 9999, 99999), Current AQ is carried forward

If both the Current AQ and Spec Calc AQ has an AQ less than 150,000kwh, Spec calc AQ is applied

If both the System and Spec Calc AQ is greater than 500% of the Current AQ, the Current AQ is carried forward

Where Meter Point has a 4dial asset and the System AQ is greater than 1,000,000kwh, Current AQ is carried forward

Where Meter Point has an Imperial 4 dial asset and the System and Spec Calc AQ has increased by more than 150,000kwh, the Current AQ is carried forward

Where Meter Point has a 4dial asset and the Spec calc AQ is greater than 1,000,000kwh, Current AQ is carried forward

Where Meter Point has an Metricl 5 dial asset and the System and Spec Calc AQ has increased by more than 150,000kwh, the Current AQ is carried forward

If the current AQ is greater than 1,000,000kwh and the System AQ is lower than 1,000,000kwh, System AQ is applied If FLAT stated within Meter Point address, Current AQ is carried forwardIf the current AQ is greater than 1,000,000kwh and the Spec calc AQ is lower than 1,000,000kwh, Spec calc AQ is applied

Where Meter Point has a 3 digit Start Read and a 5 digit End Read, Current AQ is carried forward

Where the System AQ has an AQ of 1 the System AQ will be appliedWhere Meter Point has a 4 digit Start Read and a 5 digit End Read, Current AQ is carried forward

Where the System AQ has an AQ of 1 and the reads appear erroneous (O's and 9999's) Current AQ is carried forward

If both the System AQ is greater than 500% and the Spec calc AQ is 0, the Current AQ is carried forward

Where the System AQ is less than the Current AQ, the System AQ will be appliedWhere both the System and Spec Calc AQ's result in a change of 500% or greater of the Current AQ the Current AQ is carried forward

Domestic Allocated DecisionsI&C Allocated Decisions

Where Meter Point has a Start read of 0 and no meter exchange has occurred, the Current AQ is carried forward

G0 to2.

Version 2 - 05/08/2008

Spec Calc

AQ Review - Spec Calc

Sys

tem

- S

pec

Cal

cR

ejec

tion

Shi

pper

RSU re-calculates AQ

values

Alternative Reads/ Asset Detailssubmitted to

Spec Calc via ASIfile

Valid MPRN AQ > 1kwh

Request rejectedwith reasonMPQ00001

Request rejectedwith reasonMPQ00010

Validation onintegrity ofInformation

provided

Rejections (See

Appendix 3).

Revised AQgenerated

Shipperreceives

revised AQ /Rejectiondetails viaASO file

Rejection Response sent to Shipper

Y Y Y

N NN

Version 2 - 05/08/2008

Spec Calc Validations

ASI – AQ Spec calc requests. When the supply point AQ for the provided MPRN is less than 1, it would be rejected with MPQ 00010 If all exchange details are provided and meter serial number is not provided, then STD 00137 If all exchange details are provided and imperial indicator is not provided, then STD 00139 If all exchange details are provided and exchange start reading date is null date, then STD 00143 If all exchange details are provided and exchange end reading date is null date, then STD 00145 If the start reading date is less than 01.03.1996, then it would be rejected with STD 00149 If the end reading date is less than 01.03.1996, then it would be rejected with STD 00150 If the exchange start reading date is less than 01.03.1996, then it would be rejected with STD 00151 If the exchange end reading date is less than 01.03.1996, then it would be rejected with STD 00152 Invalid Imperial Indicator (other than Y/N), rejects with STD 00154 Invalid Reading Units (other than 1,10,100,1000,10000), rejects with STD 00155 Invalid Exchange Reading Units (other than 1,10,100,1000,10000), rejects with STD 00156 Invalid Reading factor (other than 0.01,0.1,1,10,100), rejects with STD 00157 Invalid Exchange Reading factor (other than 0.01,0.1,1,10,100), rejects with STD 00158 Start reading is greater than processing date, reject with STD 00159 End reading is greater than processing date, reject with STD 00160 Exchange Start reading is greater than processing date, reject with STD 00161 Exchange End reading is greater than processing date, reject with STD 00162 Number of dials out of permitted range (ideal range is 4 to 12), reject with STD 00182 If the meter is Imperial, then reading factor and reading units must be in either of the following combinations: (0.01, 1), (0.1, 10), (1, 100), (10, 1000), (100, 10000).

Reject if otherwise with MMO 00553 If the meter is metric, then reading factor and reading units must be in either of the following combinations: (1, 1), (10, 10). Reject if otherwise with MMO 00553 If the exchanged meter is Imperial, then reading factor and reading units must be in either of the following combinations: (0.01, 1), (0.1, 10), (1, 100), (10, 1000),

(100, 10000). Reject if otherwise with MMO 00554 If the exchanged meter is metric, then reading factor and reading units must be in either of the following combinations: (1, 1), (10, 10). Reject if otherwise with MMO

00554 If the end reading is less than start reading, then reject with STD 00166 If the start reading date is less than the earliest supply point start date, then reject with STD 00183 If the supply point is end dated and if the end date is greater than the supply point end date, then reject with STD 00183 If the exchange start reading date must be equal to end reading date, otherwise reject with STD 00164 If the exchange end reading date is less than or equal to exchange start reading date, otherwise reject with STD 00165 Sum of read TTZ and exchange read TTZ count should not go beyond 99, otherwise reject with STD 00193 All the reading except the start reading date should be greater than competition effective date, otherwise reject with MRE 471 If the provided MPRN does not exist on the system, then reject with MPO 00001.

Appendix 3

Version 2 - 05/08/2008

Is An AQ Amendme

nt Required?

Is An AQ Amendme

nt Required?

Is An AQ Amendme

nt Required?

Is An AQ Amendme

nt Required?

AQ Amendments: Process Flow

Xoserve Releases Notification Files To Shipper SSP (NRQ) Threshold Crossers (NRS)

LSP (NRM)

Xoserve Releases Notification Files To Shipper SSP (NRQ) Threshold Crossers (NRS)

LSP (NRM)

Shipper Analyses Information To Determine If Amendment is Required / Can Be Actioned

Shipper Analyses Information To Determine If Amendment is Required / Can Be Actioned

Shipper Takes No Further Action

Shipper Takes No Further Action

xoserve Notifies Shipper of Revised AQ by 14th Sept: ( NRL NRO)

xoserve Notifies Shipper of Revised AQ by 14th Sept: ( NRL NRO)

1st OCTOBER AQ BECOMES EFFECTIVE1st OCTOBER AQ BECOMES EFFECTIVE

Shipper Submits Speculative Calculator

Request File: ASI File

T19 Record



T19 Record

Spec Calc File Rejected with Rejection Reason: ASO File will include S72 Rejection Record


Shipper Receives

Recalculated AQ Value

Shipper Receives


Is AQ Acceptable

and in Uniform Network

Code Tolerances?

Is AQ Acceptable


Code Tolerances?

Shipper Submits Amendment File as

Per Spec Calc Response File:

AAI File T17 Record

Shipper Submits Amendment File as

Per Spec Calc Response File:

AAI File T17 Record

xoserve Responds to Amendment File to

Shipper: AAO File

T18 Record AC, RJ or RF

Outcome

xoserve Responds to Amendment File to

Shipper: AAO File

T18 Record AC, RJ or RF

Outcome

Amendment File Rejected with Rejection Reason: AAO File will include S72 Rejection Record

Amendment File Rejected with Rejection Reason: AAO File will include S72 Rejection Record

Amendment File Accepted

Amendment File Accepted

NONO

YESYES

xoserve Responds with Speculative

Calculation Response File to Shipper:

ASO File T20 Record

AC or RJ Outcome



ASO File T20 Record

AC or RJ Outcome

NONO

YESYES

Is AQ Acceptable


Code Tolerances?

Is AQ Acceptable


Code Tolerances?

REJECTREJECT

AC

CE

PT

AC

CE

PT

REJECTREJECT

ACCEPTACCEPT

Version 2 - 05/08/2008

Amendment Validations

AAI – AQ Amendment requests. If the Meter Point is not part of any confirmation OR if the Shipper is not responsible for the provided MPRN, it would be rejected with SHI 00010. If the provided confirmation reference is not the current live confirmation of the MPRN, it would be rejected with MPO 00024. If smaller supply meter point is not eligible for AQ/WC amendment, then reject with STD 00177 If an outstanding amendment referral exists for an MPRN, it would be rejected with AQA 00018 If the requested AQ is less than 1, it would reject with STD 00178 If the start reading date is less than 01.03.1996, then it would be rejected with STD 00149 If the end reading date is less than 01.03.1996, then it would be rejected with STD 00150 If the exchange start reading date is less than 01.03.1996, then it would be rejected with STD 00151 If the exchange end reading date is less than 01.03.1996, then it would be rejected with STD 00152 Invalid Imperial Indicator (other than Y/N), rejects with STD 00153 Invalid Reading Units (other than 1, 10, 100, 1000, 10000), rejects with STD 00155 Invalid Exchange Reading Units (other than 1, 10, 100, 1000, 10000), rejects with STD 00156 Invalid Reading factor (other than 0.01, 0.1, 1, 10, 100), rejects with STD 00157 Invalid Exchange Reading factor (other than 0.01, 0.1, 1, 10, 100), rejects with STD 00158 Start reading is greater than processing date, reject with STD 00159 End reading is greater than processing date, reject with STD 00160 Exchange Start reading is greater than processing date, reject with STD 00161 Exchange End reading is greater than processing date, reject with STD 00162 Invalid Manual check flag (other than Y/N), reject with STD 00163 Number of dials out of permitted range (ideal range is 4 to 12), reject with STD 00182 If reading unit, reading factor and imperial indicator are inconsistent, then reject with MMO 00533 If exchange reading unit, reading factor and imperial indicator are inconsistent, then reject with MMO 00534 If the end reading is less than start reading, then reject with STD 00166 If the start reading date is less than the earliest supply point start date, then reject with STD 00183 If the supply point is end dated and if the end date is greater than the supply point end date, then reject with STD 00183 If the exchange start reading date must be equal to end reading date, otherwise reject with STD 00164 If the exchange end reading date is less than or equal to exchange start reading date, otherwise reject with STD 00165 If exchange TTZ is 0 and if the exchange end reading date is less than exchange start reading date, otherwise reject with STD 00167 Sum of read TTZ and exchange read TTZ count should not go beyond 99, otherwise reject with STD 00193 If the shipper is not responsible for the MPRN, it would be rejected with SHI 0010

Version 2 - 05/08/2008

Amendment Validations

All the readings except the start reading date should be greater than competition effective date, otherwise reject with MRE 471 If the current and proposed market sector is Domestic, then 20% amendment tolerance rule is applied. Meter AQ changes will be accepted only if it

lies beyond the tolerance range with respect to xoserve calculated initial AQ. Reject reason provided is AQA 00019 The requested AQ value (provided in the file) and the derived AQ (using the parameters in the file) should match, otherwise reject with STD 00179 If the MPRN is primary and if either the current or proposed market sectors is I&C, then refer the amendment, otherwise reject it with MPO 00587. If the provided MPRN does not exist on the system, then reject with MPO 00001. If the start read date is not later than AQ-WC backstop date, then reject with STD 00217 If the end read date is earlier than xoserve calculated end read date, then reject with STD 00216 Outstanding AQ/WC Appeal referral exists for this meter point, then reject with AML 00018 Insufficient information to calculate AQ, then reject with AQA 00016 Consumption period less than 6 month, then reject with MRE 00470 Post code not found, then reject with POC 00011 Start reading/date not consistent with UKLink, then reject with RRR 00010 End reading/date not consistent with UKLink, then reject with RRR 00011 Exchange start read/date not consistent with UKLink, then reject with RRR 00012 Exchange end read/date not consistent with UKLink, then reject with RRR 00013 TTZ count incorrect, then reject with RRR 00014 Meter exchange not identified on amendment/appeal, then reject with RRR 00015 Manual referral with insufficient supporting information, then reject with RRR 00016 Appeal window not currently open for request, then reject with RRR 00017 Exchange meter serial number not provided, then reject with STD 00137 Exchange start reading date not provided, then reject with STD 00143 Exchange end reading date not provided, then reject with STD 00145 Occurrence of DM since start reading date, then reject with STD 00171 Invalid value for number of dials or digits, then reject with STD 00181 Meter point was not part of a live supply point for entire consumption period, then reject with STD 00183 DM meter point cannot be appealed/amended to an AQ below the domestic threshold, reject with SPO 00013

G0 to 2.

Version 2 - 05/08/2008

Can An AQ

Appeal Be Raised?

Can An AQ

Appeal Be Raised?

Can an AQ

Appeal be raised?

Can an AQ

Appeal be raised?

AQ Appeals: Process Flow

Shipper determines current AQ value is not reflective of actual consumption

Shipper determines current AQ value is not reflective of actual consumption

Shipper unable to raise AQ Appeal – AQ will be recalculated during next AQ Review – Shipper

will have opportunity to raise Amend

Shipper unable to raise AQ Appeal – AQ will be recalculated during next AQ Review – Shipper

will have opportunity to raise Amend



T19 Record



T19 Record



Shipper Receives


Shipper Receives


Is AQ Acceptable?

Is AQ Acceptable?

Shipper Submits Appeal File as Per

Spec Calc Response File:

API File T17 Record

Shipper Submits Appeal File as Per

Spec Calc Response File:

API File T17 Record

xoserve Responds to Appeal File to Shipper:

• APO File • T18 Record

• AC, RJ or RF Outcome

xoserve Responds to Appeal File to Shipper:

• APO File • T18 Record

• AC, RJ or RF Outcome

Amendment File Rejected with Rejection Reason: APO File will include S72 Rejection Record

Amendment File Rejected with Rejection Reason: APO File will include S72 Rejection Record

Shipper Receives Appeal File and submits

re-nomination & confirmation using Appeal Reference

Shipper Receives Appeal File and submits

re-nomination & confirmation using Appeal Reference

NONO

YESYES



• ASO File • T20 Record

• AC or RJ Outcome



• ASO File • T20 Record

• AC or RJ Outcome

NONO

YESYES

Is AQ Acceptable?

Is AQ Acceptable?

REJECTREJECT

AC

CE

PT

AC

CE

PT

REJECTREJECT

ACCEPTACCEPT

AQ Goes live on xoserve System on Confirmation

Effective Date

AQ Goes live on xoserve System on Confirmation

Effective Date

Version 2 - 05/08/2008

Appeal Validations

Appeal process specific Validations Reject with AML 00017 error in case there is a mismatch between provided appeal level (T41/T43) and detail level (T17/T21) confirmation reference

numbers If the Meter Point does not belong to the confirmation reference identified on the T41/T43 record, reject with AML 00015. If the provided confirmation reference number does not exist on the system, reject with CNF 00001 If duplicate T17/T21 records are sent under a same T41/T43 record. Reject with AML 00016 If any of the meter point are rejected on the appeal then, the appeal is rejected with AML 00012 There must be at least one T17 / T21 records to process the appeal, otherwise reject with APL 00014 If the current and the proposed market sectors are Domestic, then reject the appeal with APL 00015 If the WC appeal start date does not fall into the winter period, reject with WTC 00014 If the WC appeal end date does not fall into the winter period, reject with WTC 00015 If the current and proposed market sector is Domestic, then 20% appeal tolerance rule is applied. Meter WC changes will be accepted only if it lies

beyond the tolerance range with respect to xoserve calculated initial AQ. Reject reason provided is WTC 00016 Reject all AQ appeals between the period 01-AUG to 15-SEP as part of AQ review process. The appeals received during this period are rejected with

STD 00192 WC Appeals from Shippers are rejected with APL 00012 If the provided confirmation is not in either LI or CO status, reject with CNF 00003 If the Shipper is not the current registered owner of the MPRN, reject with SHI 00010 If the provided nomination shipper reference is not valid, reject with CNF 00010 DM meter point cannot be appealed/amended to an AQ below the domestic threshold, reject with SPO 00013

Documents

Version 2 - 05/08/2008 The AQ calculation and validation process Compiled and delivered from the xoserve AQ Team for Review Group 209 Susan Prosser & Steve