Improved Validation for DI51599 - Electricity Smart Meter Equipment (ESME ID)
Date of latest update
Type
Issue
ID
I0341
Other Industry Codes impacted
Priority
Urgent
No
Latest Update
13/08/2026 - accepted in by Code Manager
Summary
A DNO has raised an issue with the ESME ID data stored in MPRS. Some of the ESMEs are passing MPRS basic validation but are being rejected by the proposed Metering Service preventing a change of service.
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Stages Selection
Stages Selection
I0341 submission form
Company Name
-
Review status
Review required
Smart Meter Communication Licence Code Changes
Date of latest update
Type
Change
ID
R0333
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
28/08/2026 - The consultation has closed - The Code Manager now present this Change Proposal for a final vote at the REC Change Panel on 15 September 2026.
Summary
Ofgem has awarded the Smart Meter Communications Licence 2 (SMCL2) to DCC2 Limited, a subsidiary of Smart Energy Code Company Limited (SECCo). To enable a smooth transition and ensure continuity of service, changes to both the Smart Energy Code (SEC) and the Retail Energy Code (REC) will be required.
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Implementation Status
Date Raised
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
R0333 - Legal Text V1.1 28.08.26
Archive
Off
Stages Selection
SME
SME Role
Lead Assurance Analyst
I0333 Submission Form (PDF)
R0333 Change Report (Consultation) (Approved) 04.08.26
Company Name
-
Review status
Review required
Post-MHHS Full Transition Complete (M15) REC updates
Date of latest update
Type
Issue
ID
I0325
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
21/07/2026 - On 21 July 2026, the REC Change Panel voted to approve the Change Report (Proposal Plan) for I0325.
Summary
The REC was updated, primarily through R0209 and R0241, to add requirements that support the transition to, and enduring operation of the MHHS arrangements. As part of the transition, each impacted Metering Point will be migrated using processes defined in Codes, including the REC. Once this migration activity is complete, the legacy and transitional arrangements will become redundant and should be removed from the REC to support its efficient operation
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Problem Statement
Retention of redundant obligations within the REC would make it more complex to navigate for Market Participants and could cause confusion on the obligations that are in effect to support the efficient operation of the Great British Energy retail market. It is also worth noting that until Ofgem formally closes the MHHS Significant Code Review (SCR), this REC Issue could potentially impact that SCR.
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
I0325 submission form
I0325 Scope list
Company Name
-
Review status
Review required
REC Portal Solution to R0224
Date of latest update
Type
Issue
ID
I0315
Priority
Urgent
No
Latest Update
18/02/2026 - accepted in by Code Manager
Summary
As part of R0224, the technical solution creates a CSS replica (read-only) database view that can be used by RECCo and the REC Code Manager to generate reports on demand for market participants. For users to be able to access this database and request generation of the appropriate reports, this change is seeking to develop that front end portal capability to manage user’s requests and allow for completed reports to be downloaded via the REC Portal.
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Status
Implementation Status
Date Raised
Date of Update to Priority
Solution Development
Stages Selection
Stages Selection
I0315 submission form
Company Name
-
Review status
Review required
In-year CRS budget amendment
Date of latest update
Type
Change
ID
R0309
Change Path
Urgent
No
Latest Update
17/02/2026 - Change Panel approved this Change Proposal for implementation with immediate effect.
Summary
DCC has identified that the CRS budget for the current Financial Year (2025-2026) can be reduced, and as per the Code, a REC Change Proposal must be raised for the agreed budget to be amended.
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Implementation Status
Date Raised
REC Decision Maker
Date of Update to Priority
Solution Development
Stages Selection
R0309 submission form
R0309 Change Report (Final Recommendation) approved 17.02.26
Company Name
-
Review status
Review required
Rationalisation of reports produced by CSS - CRS improvements project
Date of latest update
Type
Issue
ID
I0289
Other Industry Codes impacted
Change Path
Urgent
No
Latest Update
15/01/2026 The Code Manager has rejected this Change Proposal as it does not impact any REC products. Further feedback, and any information on the CRS Improvements project as a whole, can be provided via the usual channels, including the Switching Operator Forum, your OAM teams and the Change Management team.
Summary
Ensuring the reports generated from CSS (Into ServiceNow) are being utilised and where they are not utilised reducing cadence or potentially removing completely.
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
I0289 submission form
Archive
Off
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
Issue Proposal Form
I0289 Information Request Consolidated Responses
Company Name
-
Review status
Review required
Annual Address Management Plan Updates
Date of latest update
Type
Change
ID
R0283
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the February 2026 REC Release.
Summary
Address management is the responsibility of DCC, with support from REC Parties. There has been progress resolving address data issues, but there is no mechanism to clearly establish code level targets for address improvement, or overall market performance.
Change Plan
Proposal Plan approved at Change Panel
Completed
Start:
Due:
Completion:
21 Oct 2025Impacted REC Documents
Impacted REC Services
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
R0283 Legal Text For Consultation
Archive
Off
Problem Statement
The REC Address Management Service is the responsibility of DCC, with support from REC Parties. There has been progress resolving address data issues, but there is no mechanism to clearly establish code level targets for address improvement, or overall market performance.
Stages Selection
SME
SME Role
Lead Assurance Analyst
SME User
amoden@deloitte.co.uk
R0283 submission form
R0283 Change Report (Proposal Plan) v1.0 approved 21/10/2025
R0283 Change Report (For Consultation) v1.0
R0283 Consolidated Consultation Responses v1.0
R0283 - Change Report (Final Recommendation) Approved 16.12.25 v1.0
Company Name
-
Review status
Review required
Extending R0067 Refresh Functionality
Date of latest update
Type
Issue
ID
I0281
Change Category
Change Path
Priority
Urgent
No
Latest Update
03/07/2026 - The Service Provider Impact Assessment is ongoing and expected to be completed by 07 August 2026.
Summary
CSS Market Messages sent by the Central Switching Service (CSS) to Switching Data Service Providers (SDSPs) are either not being received, being received after Gate Closure, or are being received out of the order that they were originally sent in. This Issue originally aimed to extend the Refresh functionality, implemented for the Gas Retail Data Agent (GRDA).to the Electricity Retail Data Agent (ERDA). Following solution development for I0281, it was agreed that the Refresh functionality would be made available for all Market Participants in receipt of the in-scope messages.
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Problem Statement
CSS messages are not received by the SDSPs in the order in which they were originally sent, or after Gate Closure, so it can be difficult to detect and often requires significant manual effort to resolve. This issue can directly impact Consumer switching experiences, causing disruption and possible delays in a switch.
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
SME User
maxime.van-eyseren@capgemini.com
SME Role
Lead Assurance Analyst
SME User
amoden@deloitte.co.uk
I0281_Change Report (Update to Plan) v1.0 (Pre-approval)
I0281_Change Report (Update to Plan) v1.0 Approved 20.05.2026
Company Name
-
Review status
Review required
CSS Certificate Authority audit clarification
Date of latest update
Type
Change
ID
R0280
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the February 2026 REC Release.
Summary
CSS Certificate Authority Service Definition clause 9.1 states that the CSS CA Service will be audited each year by a third party against an approved compliance standard and or methodology. The clause however does not state who initiates the audit (i.e. RECCo, the Code Manager, Switching Operator etc.) and engages with the third party.
Change Plan
Proposal Plan approved at Change Panel
Completed
Start:
Due:
Completion:
21 Oct 2025Impacted REC Parties and Market Participants
Status
Implementation Date
27 February 2026
Implementation Status
Date Raised
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
R0280 Legal Text approved 16.12.2025 v1.0
Archive
Off
Problem Statement
Section 9 of the CSS Certificate Authority Service Definition document mandates an annual third-party audit of the CSS Certificate Authority Service against an approved compliance standard or methodology. However, it does not specify the audit technique or methodology to be used, nor does it specify who is responsible for initiating the audit and engaging with the third-party.
Stages Selection
SME
SME Role
Lead Assurance Analyst
SME User
amoden@deloitte.co.uk
R0280 submission form
R0280 Change Report (Proposal Plan) v1.0 approved 21/10/2025
R0280 Change Report (For Consultation) v1.0
R0280 Consolidated Consultation Responses v1.0
R0280 Change Report (Final Recommendation) Approved 16.12.25 v1.0
Company Name
-
Review status
Review required
Enabling transparency of the CRS Provider’s REC service level performance
Date of latest update
Type
Change
ID
R0272
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the February 2026 REC Release.
Summary
RECCo regularly reports on the performance of REC Service Providers in relation to their activities under the REC. However, there is currently no formal agreement to permit the publication of CRS performance measures between the CRS Provider and RECCo. Due to the multi-Party agreement, the REC does not specifically address the publication of this performance data. Instead, RECCo are operating under an informal understanding with the CRS Provider, which means there is a possibility that publication may be delayed or not agreed to in a given month. RECCo is dependent on the CRS Provider’s approval for each publication, which can cause delays. This approval could also be withheld at any point.
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Status
Implementation Date
27 February 2026
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- An update to the REC Schedule 6 – Performance Assurance.
Proposed Solution Document
Document title
R0272 Approved legal text (26.01.2026)
Archive
Off
Problem Statement
Unlike REC Service Providers, there is currently no formal agreement in place between the CRS Provider and RECCo to publish details about the CRS Provider’s performance. RECCo is therefore dependent on the CRS Provider’s approval for each publication. Not only could there be delays in RECCo’s reporting, but the approval could also be withheld at any point, preventing RECCo’s reporting.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
I0272 Change Proposal Form
R0272 Consolidated Consultation responses V1.0
Company Name
-
Review status
Review required