Sharing of SSC and TPR Information for MHHS Smart and Advanced Meters
Date of latest update
Type
Issue
ID
I0273
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
23/06/2026 - The Code Manager has published an Interim Guidance Document for I0273.
Summary
In the MHHS design the Standard Settlement Configuration (SSC) is a non-mandatory data item for Smart and Advanced metering points, in addition the register level TPR information is not shared in the MTD flows for these meters (IF-006 for Smart and D0268 for Advanced). It was identified through BSC Issue I118 that there is a requirement for the SSC to be set for Domestic / Microbusiness Advanced Metering Points making use of the HH data opt out and there may be other areas where the SSC is required.
Impacted REC Parties and Market Participants
Status
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
I0273 - Interim Guidance Document V1.1
Archive
Off
Problem Statement
The MHHS design does not mandate the use of SSC or support register-level TPR data for Smart and Advanced Meters, creating gaps in data availability for certain Settlement scenarios.
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
I0273 Submission Form
I0273 - Update to Plan V2.0 (Pre-Approval) 06.05.2026
Company Name
-
Review status
Review required
Addition of Export flag in D0303 flows
Date of latest update
Type
Change
ID
R0261
Change Category
Change Path
Priority
Urgent
No
Latest Update
27/05/2026 - the Technical Expert Panel voted to approve R0261 for implementation in November 2026. The appeal window closed on 12 June 2026.
Summary
The Market Message (D0303 / MM00240) responsible for informing Metering Asset Providers (MAPs) of Metering Equipment installation is generating a lot of queries and exceptions due to Export MPAN creation. This is requiring MAPs to manually investigate whether a D0303 showing a Metering Asset being installed against a second Metering Point is a correction or the creation of an Export MPAN that can be ignored. Due to the growing uptake of microgeneration this is a problem that is growing in volume.
Change Plan
Change Report (Proposal Plan) approved at Change Panel
Completed
Start:
Due:
Completion:
04 Nov 2025Status
Implementation Date
06 November 2026
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
I0261 solution V0.1
Archive
Off
Document title
I0261 solution post IA V0.2
Archive
Off
Problem Statement
MAPs must manually check D0303 Market Messages received with duplicated Metering Equipment (e.g. duplicated Meter Serial Number) to ensure they hold the correct Metering Equipment against the correct Metering Point. For Export Metering Points using the same Metering Equipment as the Import Metering Point, this manual check results in no action needing to be taken.
Stages Selection
SME
SME Role
Lead Technical Analyst
Issue Proposal form
I0261 Change Report (Proposal Plan) V1.0 approved 04.11.25
I0230 and I0261 Solution Development Report V1.0
I0230 I0261 Q&A session V1.0
I0230 and I0261 Consolidated IR Responses PUBLIC V1.0
I0261 Extension to Plan V1.0
I0261 Consolidated Impact Assessment Responses PUBLIC v1.0
R0261 Change Report (For Consultation) V1.0
R0261 Consolidated Consultation Responses v1.0
R0261 Change Report (Final Recommendation) V1.0 approved 27.05.26
Company Name
-
Review status
Review required
MM00023 /D0135 - Asset Condition Report clarification of intent on R0021/R0101
Date of latest update
Type
Change
ID
R0256
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the February 2026 REC Release.
Summary
REC Changes R0021 and R0101 introduced Scenario Variant SV00493 (Safe Isolation Provider (SIP) to Supply Fault Information Centre (SFIC)) to the Asset Condition Report Market Message (MM00023/D0135) which sets group 60H range to 0-*. It has been queried with the Code Manager if this was in error, as SIPs and Meter Operator Agents (MOAs) should act in the same manner when sending D0135 flows.
Change Plan
Proposal Plan approved by Change Panel
Completed
Start:
Due:
Completion:
01 Jul 2025Impacted REC Documents
Status
Implementation Date
27 February 2026
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
Red lined Data Specification for I0256
Archive
Off
Problem Statement
The differences between the Scenario Variants of the MOA, SIP, CMRM, Advanced Meter Service and Smart Meter Services in the D0135 flow could lead to confusion, as these Parties are meant to operate in the same manner in respect of sending the D0135 flow.
Stages Selection
Issue Form
I0256 Change Report (Proposal Plan) V1.0 approved 01.07.25
I0256 Consolidated Impact Assessment Responses PUBLIC V1.0
R0256 Change Report (For Consultation) V1.0
R0256 Consolidated Consultation Responses v1.0
R0256 Change Report (Final Recommendation) V1.0 approved 24.09.25
Company Name
-
Review status
Review required
Terms of Reference Updates
Date of latest update
Type
Change
ID
R0255
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal was implemented as part of the 7 November 2025 REC Release.
Summary
To include representation and involve SEC Performance Assurance in PAB meetings and to review REC PAB terms of reference. Plus changes to the CCSG ToRs.
Status
Implementation Date
07 November 2025
| Included changes | Affected REC Items | |
|---|---|---|
| R0003 | Market-wide Half-Hourly Settlement Implementation |
Implementation Status
Date Raised
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
Draft changes for REC PAB and CCSG (zip)
Archive
Off
Problem Statement
The current ToRs for CCSG and PAB discussions and attendees have a limitation due to the codes that are listed. This prevents further involvement from other industry code bodies where cross code working is required.
Stages Selection
SME
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
Draft REC PAB ToRS (pre-approved)
R0255 - Change Report (Final Recommendation) Approved 05.08.25
R0255 - Change Report (Proposal Plan)
Draft CCSG ToRs (pre-approved)
Change Proposal form
R0255 Change Report (Consultation - Approved) V1.0 17.06.25
R0255 - Non-Confidential Consultation Response
Company Name
-
Review status
Review required
Non-Domestic Change of Occupier Reporting (R0155 Solution)
Date of latest update
Type
Change
ID
R0254
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal was implemented as part of the 7 November 2025 REC Release.
Summary
As part of the R0155 change process, the REC Performance Assurance Board requested ongoing monitoring reporting to identify outliers or anomalous behaviour which the Code Manager would then follow up in detail. However, this planned reporting by Energy Suppliers was descoped from R0155 due to the ongoing development of an Ofgem Reporting Request for Information (titled Non-Domestic Market Monitoring Request for Information). The Ofgem RFI includes data received from Energy Suppliers on the time taken for a Non-Domestic Consumer’s request, and to simplify the process for Energy Suppliers, REC Performance Assurance intend on using the same data. This reduces the need to make two related, but different reports in the same topic areas. The Code Manager intended to use the reporting from the Ofgem RFI for ongoing Performance Assurance monitoring of the Non-Domestic Change of Occupier process. However, this was not confirmed by Ofgem in time for the R0155 implementation, as such a separate REC Change Proposal is required to include this data as part of the ongoing Performance Assurance monitoring.
Status
Implementation Date
07 November 2025
| Included changes | Affected REC Items | |
|---|---|---|
| R0003 | Market-wide Half-Hourly Settlement Implementation |
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- Incorporating the Ofgem Reporting RFI Non-Domestic Change of Occupier data into the Performance Assurance Reporting Catalogue
- Development of a process to agree data sharing between Ofgem and the REC Code Manager to share allow Ofgem to share the Non-Domestic Change of Occupier data directly with the Code Manager to reduce the burden on Energy Suppliers and save them from having to duplicate submissions
Proposed Solution Document
Document title
Ofgem Non Domestic Market Monitoring RFI template (CoO/CoT Extract) 03.06.2025
Archive
Off
Document title
Copy of PARC V5.15 (23.09.2025)
Archive
Off
Problem Statement
The planned reporting by Energy Suppliers was descoped from R0155 due to the ongoing development of an Ofgem Reporting Request for Information (titled Non-Domestic Market Monitoring Request for Information). Without the Ofgem RFI data being submitted, or an alternative means of receiving or reporting Non-Domestic Change of Occupier data, REC Performance Assurance are unable to complete the ongoing monitoring activity originally requested by the Performance Assurance Board during the R0155 change process.
Stages Selection
Issue Form (Non-Domestic Change of Occupier Reporting).docx
Extract from Ofgem RFI Guidance_March_2025.docx
2025.08 Non Domestic Market Monitoring RFI template 2025 for suppliers
I0254 - Change Report (Proposal Plan) V1.1 (Approved) 03.06.2025
I0254 - Change Report (Impact Assessment) V1.0 03.06.2025
I0254 - Consolidated Party Impact Assessment Responses V1.0 (01.07.2025)
R0254 - Consolidated Consultation Responses (Non-Confidential) V1.0 (18.09.2025)
Company Name
-
Review status
Review required
Update to R0060 Implementation Date
Date of latest update
Type
Change
ID
R0250
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
28/05/25 - On 28 May 2025 the Technical Expert Panel approved R0250, resulting in the implementation of R0060 being moved from 27 June 2025 to the ‘First available release after MHHS Milestone 8 – Code changes delivered’.
Summary
Without an update to the implementation of R0060 complexity is created for MHHS code drafting implementation as the MHHS design details in its operational choreography document that all timings are in clock time unless stated as otherwise.
Change Plan
Change Proposal approved by Technical Expert Panel
Completed
Start:
12 May 2025Due:
28 May 2025Completion:
28 May 2025Consultation completed
Completed
Start:
25 Mar 2025Due:
12 May 2025Completion:
12 May 2025Impacted REC Services
Impacted REC Parties and Market Participants
Status
Implementation Date
27 June 2025
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Problem Statement
Without an update to the implementation date of R0060, the intent of the original proposed implementation date cannot be achieved. If the implementation date remains as 27 June 2025 complexity will be created for the implementation of MHHS code drafting as the MHHS design details in its operational choreography document that all timings are in clock time unless stated as otherwise.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
beth.brown@capgemini.com
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
Change Proposal form
R0250 Change Report (Proposal Plan) v2.0 (Approved) 15.04.2025
R0250 Change Report (Consultation) V1.0 16.04.2025
R0250 Consolidated Consultation Responses v1.0
R0250 Change Report (Final Recommendation) v2.0 (Post-Vote) 28.05.2025
Company Name
-
Review status
Review required
C21 to be introduced into STIRG Document
Date of latest update
Type
Change
ID
R0244
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the February 2026 REC Release.
Summary
This change proposes to add a new category 3 asset condition code to the Guidance for Service Termination Issue Reporting (STIRG) document, to allow Meter Operator Agents (MOAs) to report to the Distribution Network Operator (DNO) where the meter supply neutral is fed via a shared additional N/E block without having to abort the meter work.
Change Plan
Proposal Plan approved by Change Panel
Completed
Start:
Due:
Completion:
01 Apr 2025Approved at Metering Expert Panel
Completed
Start:
Due:
Completion:
09 Jul 2025Status
Implementation Date
27 February 2026
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
C21 proposed legal text
Archive
Off
Document title
Non-standard PME arrangement - for consultation
Archive
Off
Document title
R0244 STIR Fully Red Lined post consultation
Archive
Off
Problem Statement
Parties are having to unnecessarily abort installs where there is a non-standard PME connection arrangement as there is no category 3 asset issue reporting option within the STIRG document.
Stages Selection
Proposal form
I0244 Change Report (Proposal Plan) v1.0 Approved 01.04.25
I0244 Consolidated Impact Assessment Responses PUBLIC v1.0
R0244 Change Report (For Consultation) V1.0
R0244 Consolidated Consultation Responses v1.0
R0244 Change Report (Final Recommendation) V1.0 post vote
Company Name
-
Review status
Review required
Missing Scenario Variant from R0043
Date of latest update
Type
Change
ID
R0242
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the February 2026 REC Release.
Summary
There is a missing scenario variant from the introduction of R0043 – Schedule 14 Metering Operations states the Crowded Meter Room MOA (CMRM) should send a D0139 to the Supplier and DNO but the scenario variant of CMRM to DNO is missing.
Change Plan
Proposal Plan approved at Change Panel
Completed
Start:
Due:
Completion:
18 Mar 2025Final vote at Technical Expert Panel
Completed
Start:
Due:
Completion:
25 Jun 2025Impacted REC Parties and Market Participants
Status
Implementation Date
27 February 2026
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Problem Statement
CMRMs currently cannot send all the Market Messages required of them in Schedule 14 Metering Operations.
Stages Selection
Change Proposal form
R0242 Change Report (Proposal Plan) V1.0 Approved 18.03.25
R0242 Consolidated Impact Assessment Responses
R0242 Change Report (For Consultation) V1.0
R0242 Consolidated Consultation Responses v1.0
R0242 Change Report (Final Recommendation) V1.0 approved 25.06.25
Company Name
-
Review status
Review required
Performance Assurance Reporting Catalogue - Annual Review
Date of latest update
Type
Change
ID
R0238
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the REC Release on 27 June 2025.
Summary
As part of the Performance Assurance operating plan we are required to review the PARC on an annual basis to identify any changed required. This exercise has been completed and a small number of minor changes identified including updating reference material to reflect other changes to Performance Assurance artifacts (e.g. updates to the Retail Risk Register)
Change Plan
Proposal Plan Approved
Completed
Start:
Due:
Completion:
18 Feb 2025Status
Implementation Date
27 June 2025
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
Performance Assurance Review Catalogue R0238 - v0.1
Archive
Off
Problem Statement
As part of the Performance Assurance Operating Plan, REC Performance Assurance are required to review the PARC on an annual basis to identify any changed required. The REC PAB has conducted their 2024 review of the PARC and proposed changes to update to Version 5.1. If the PARC is not kept up to date, this can lead to confusion for Parties. With some of the changes identified correcting typographic errors that can cause errors by Parties when they are uploading data.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
awaghorn@deloitte.co.uk
R0238 - Change Report (Impact Assessment) v1.0
R0238 - Change Report (Proposal Plan - Approved) v1.0 18.02.2025
Change Proposal form
R0238 - Consolidated Impact Assessment Responses V1.0
R0238 - Change Report (Consultation) V1.0
R0238 - Consolidated Consultation Responses (23.04.2025)
R0238 - Change Report (Final Recommendation) V2.0 (Post-Vote) 27.05.2025
Company Name
-
Review status
Review required
Missing Scenario Variants in D0179
Date of latest update
Type
Change
ID
R0235
Change Category
Change Path
Priority
Urgent
No
Latest Update
01/07/2025 - On 01 July 2025, the REC Change Panel voted to reject R0235 and approve R0235A, in line with the Code Manager's recommendation. The appeal window has closed.
Summary
Within MHHS SIT there is a scenario where the LDSO generates a D0139 to the MS for a PPM but the requirement is for the MS to generate a D0179. There is a gap in the D0179 data required and that provided on the D0139. 21.5.1 & 21.5.6 under Schedule 14 states that where the DNO changes the energisation status, within 3 WD of changing the energisation status the DNO will send the D0139 or the D0179(21.5.6) to the MS and then the MS will generate the D0179 to the Supplier(21.5.6). Currently, the LDSO only generates the D0179 to the Supplier but not to the MOP and the only change under MHHS is to add the new variant MSS.
Change Plan
Change Report (Proposal Plan) approved by Change Panel
Completed
Start:
Due:
Completion:
04 Mar 2025Presented at Change Issues Group
Completed
Start:
Due:
Completion:
06 Mar 2025Presented at Change Issues Group
Completed
Start:
Due:
Completion:
01 May 2025Presented at REC Change Panel
Completed
Start:
Due:
Completion:
20 May 2025Alternative Change Proposals
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Implementation Date
27 February 2026
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
I0235 D0179 Missing Scenario Variants
Archive
Off
Document title
R0235 Data Specification V0.2
Archive
Off
Problem Statement
DNOs and MOAs cannot fulfil their full obligations listed in Schedule 14 Metering Operations as there missing Scenario Variants in the Data Specification preventing them from sending the D0179 to all required Parties.
Stages Selection
I0235 Change Proposal Form
I0235 Change Report (Proposal Plan) V1.0 Approved 04.03.25
I0235 Consolidated Impact Assessment Responses V1.0
R0235 and R0235A Change Report (For Consultation) V1.1
R0235 and R0235A Consolidated Consultation Responses PUBLIC V1.0
R0235 and R0235A Change Report (Final Recommendation) V2.0 (Approved) 01.07.2025
Company Name
-
Review status
Review required