Explore use of CHECK as a Meter Type option on J0483 DI-059
Date of latest update
Type
Issue
ID
I0344
Other Industry Codes impacted
Priority
Urgent
No
Latest Update
24/08/2026 - accepted in by Code Manager
Summary
It has been suggested that CHECK meters should not be sent within industry messages so the presence of this value within the valid set may not be required. This Issue has been raised to explore whether this assumption is correct, look at the existing/historic use cases industry have used the CHECK option for, if they are no longer valid and if so why not.
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
I0344 submission form
Company Name
-
Review status
Review required
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
Farooq change proposal issue 1
Date of latest update
Type
Issue
ID
I898
Latest Update
Test
Summary
Quae cum dixisset, finem ille. Quamquam non negatis nos intellegere quid sit voluptas, sed quid ille dicat. Progredientibus autem aetatibus sensim tardeve potius quasi nosmet ipsos cognoscimus. Gloriosa ostentatio in constituendo summo bono. Qui-vere falsone, quaerere mittimus-dicitur oculis se privasse; Duarum enim vitarum nobis erunt instituta capienda. Comprehensum, quod cognitum non habet? Qui enim existimabit posse se miserum esse beatus non erit. Causa autem fuit huc veniendi ut quosdam hinc libros promerem. Nunc omni virtuti vitium contrario nomine opponitur.
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Date Raised
Date of Update to Priority
Solution Development
Proposed solution summary
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Negat esse eam, inquit, propter se expetendam. Primum Theophrasti, Strato, physicum se voluit; Id mihi magnum videtur. Itaque mihi non satis videmini considerare quod iter sit naturae quaeque progressio. Quare hoc videndum est, possitne nobis hoc ratio philosophorum dare. Est enim tanti philosophi tamque nobilis audacter sua decreta defendere.
Problem Statement
Test
Stages Selection
Workgroup
Workgroup(s)
Company Name
Loremipsum
Review status
Review required
Regulatory Alliance Creation Rejections
Date of latest update
Type
Issue
ID
I0331
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
19/08/2026 - the Change Report (Proposal Plan) was approved by Change Panel. The Change Team and Performance Assurance team are working together to determine if there are performance assurance requirements for this change.
Summary
An incident where Network Parties did not submit Regulatory Alliances on time to the Central Switching Service (CSS) Provider, or did submit the Regulatory Alliances but did not action rejections from the CSS Provider in a timely manner, led to over 200 Consumers being delayed in Switching to their chosen Energy Supplier. This Change Proposal has been raised to review this process.
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
Proposed Solution Document
Document title
I0331 Schedule 24 Switching Data Management
Archive
Off
Problem Statement
The lack of Service Level Agreements (SLAs) on Network Parties to submit Regulatory Alliances to the CSS Provider or to work any rejections received from the CSS Provider can lead to delays in Consumers being able to Switch to their chosen Energy Supplier.
Stages Selection
Stages Selection
SME
SME Role
Lead Assurance Analyst
I0331 submission form
I0331 Change Report (Proposal Plan) V1.0 approved 18.08.26
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
Addition of value 11 to data item J0418
Date of latest update
Type
Change
ID
R0310
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the June 2026 REC Release.
Summary
To add value 11 to the valid set value for data item J0418 – Meter COP. Unable to update Meter technical details (MTD's), the D0268 flow, as specified under BSCP603/7 via the DTN as the AMVLP. The appointed agent will not be able to automatically process or upload the flows received to their systems due to validation errors.
Impacted REC Documents
Impacted REC Services
Impacted REC Parties and Market Participants
Status
Implementation Date
26 June 2026
| Included changes | Affected REC Items | |
|---|---|---|
| R0103 | Central provision of DCC Technical Contacts for requesting test certificates |
|
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
R0310 submission form
R0310 Proposed changes to REC Data Specification
R0310 Change Report (Proposal Plan and Consultation) Approved 17.03.26
R0310 Consolidated Consultation Responses
R0310 Change Report (Final Recommendation) Post-vote
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
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
Effective Dates in EES
Date of latest update
Type
Issue
ID
I0247
Other Industry Codes impacted
Urgent
No
Latest Update
12/08/2026 - the Proposer has chosen to withdraw this Issue as MHHS means many of the effective dates are being updated as per the original business case so the change is no longer required.
Summary
On a switch many of the effective dates within EES default to the switch date. This includes energisation status. It means EES users that don't have access to the meter technical details do not know the actual date the status changed.
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
Proposal Form
Company Name
-
Review status
Review required
Sequence order of CSS00200 message
Date of latest update
Type
Issue
ID
I0204
Urgent
No
Latest Update
08/11/2024 - The Proposer has withdrawn this issue as it is being progressed under MHHS CR056. The adoption window has now closed. * This is Issue relates to the Market-wide Half Hourly Settlement design.
Summary
Empty
Impacted Consumers
Impacted REC Documents
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
Company Name
St.Clements
Review status
Review required