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assumption is correct, look at the existing/historic use cases industry have used the CHECK option for, if they are no longer valid and if so why not.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
Enabling Dual MSA & MSS (SVA MOA) appointments for WC connection types
Date of latest update
Type
Change
ID
R0342
Other Industry Codes impacted
Urgent
No
Latest Update
13/08/2026 - accepted in by Code Manager
Summary
Under the legacy/pre-MHHS arrangements the market is segmented by Measurement Class (MC) for settlement purposes which is not sensitive to the Meter type that is installed or is to be installed, meaning that the replacement of Traditional meters to either smart or Advanced metering equipment can be arranged without the need for the Change of Measurement Class (CoMC) process to be conducted concurrent with the meter exchange (MEX). Under MHHS, when a WC connection goes through a MEX from Traditional to Advanced, or from Advanced to Smart in the MHHS arrangements a new complexity is placed on suppliers because the CoSeg process must be tightly co-ordinated to a specified planned MEX date and processed through the MPRS within 3 Working Days of that date.
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Stages Selection
R0342 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
REC Change to align with BSC CP Clarify Supplier obligations for IF-002 messages where a Switch is cancelled
Date of latest update
Type
Change
ID
R0339
Change Category
Other Industry Codes impacted
Priority
Urgent
No
Latest Update
06/08/2026 - Change Proposal accepted in by Code Manager
Summary
A BSC CP has been raised to clarify Supplier obligations for IF-002 messages where a Switch is cancelled. This obligation is also in REC Schedule 14 Metering Operations, so a REC change is required or the obligation remains in place.
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Stages Selection
R0339 submission form
Company Name
-
Review status
Review required
REC Change to align with CP1633 Capture Modem Module Details Under BSCP601
Date of latest update
Type
Issue
ID
I0338
Change Category
Other Industry Codes impacted
Priority
Urgent
No
Latest Update
06/08/2026 - Issue accepted in by the Code Manager
Summary
BSC CP1633 “Capture Modem Module Details Under BSCP601” makes amendments to BSCP601 Metering Protocol Approval and Compliance Testing. One of the amendments places obligations on MOAs where they are introducing and amending Communications Equipment. Equivalent and potentially expanded obligations need to be placed within REC Schedule 14 Metering Operations to support this.
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Status
Implementation Status
Date Raised
Fuel
Date of Update to Priority
Solution Development
Stages Selection
Stages Selection
I0338 submission form
Company Name
-
Review status
Review required
Use of REL Data by The Authority
Date of latest update
Type
Change
ID
R0330
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal was implemented as part of the July 2026 REC Release.
Summary
This Change Proposal allows The Authority to utilise REL data and its elements to match a UPRN to an MPAN. This is an electricity only Change Proposal.
Impacted REC Documents
Impacted REC Services
Status
Implementation Date
31 July 2026
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
R0330 Proposed legal text changes v2.0
Archive
Off
Document title
R0330 Legal Text for Final Recommendation
Archive
Off
Problem Statement
The REC currently limits the use of Retail Energy Location (REL) data to Switching purposes only. This limits the Authority’s ability to match a UPRN to an MPAN in support of the government’s Bill Discount Scheme.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
R0330 submission form
R0330 Change Report (Proposal Plan and Consultation) v1.0 Approved
R0330 Consolidated Consultation Responses v1.0
R0330 Change Report (Final Recommendation) v1.0 Approved 21.07.26
Company Name
-
Review status
Review required
Removal of D0383 & D0384 requirements from Sharing MTDs process
Date of latest update
Type
Change
ID
R0328
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
14/08/2026 - the consultation has opened, responses must be received by 23:59 07 September 2026.
Summary
Schedule 14 - Metering Operations currently holds obligations for a Meter Operator Agent (MOA) to send a D0383 ‘Notification of Commissioning Information’ to Electricity Suppliers, Distribution Network Operators (DNOs), Data Services and Data Collectors in certain process steps. The D0383 was not shared with these Parties in legacy arrangements, and there is no requirement for it to be sent to facilitate the MHHS arrangements. There are similar requirements to send the D0384 ‘Notification of Commissioning Status’ to these Parties, when it is only required by the Electricity Supplier. These requirements were introduced by the MHHS Design in error and need to be removed.
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
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
R0328 legal text V0.1
Archive
Off
Problem Statement
Schedule 14 - Metering Operations puts obligations on MOAs which are both not required and impossible to fulfil (as the Scenario Variants to send the D0383 from the MOA to the Electricity Supplier, DNO, Data Service and Data Collector do not exist). There are similar problems for the D0384, which is only required to be sent from the MOA to the Electricity Supplier.
Stages Selection
R0328 submission form
R0328 Change Report (Proposal Plan) v1.0 - approved 21.07.26
R0328 Change Report (For Consultation) V1.0 approved 12.08.26
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
DNOs Create Export MPANs after approving G98/99 commissioning documents
Date of latest update
Type
Change
ID
R0321
Change Category
Change Path
Priority
Urgent
No
Latest Update
20/08/2026 - the consultation is open, responses must be received by 23:59 14 September 2026.
Summary
The creation of Import Metering Points for new Premises sits with the Distribution Network Operator (DNO), while the Export Metering Points generally sit with the Electricity Supplier. When the DNO approves the G98 Engineering Recommendation Installation Document (Form B) or G99 Engineering Recommendation Installation Document (Form A3-1 or A3-2) under the Distribution Code, they could create Export Metering Points at this time (with the logical Disconnection process being available for any Export Metering Points that are then not required).
Impacted REC Documents
Impacted REC Parties and Market Participants
Status
Implementation Date
25 June 2027
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed Solution Document
Document title
Schedule 27 RMP lifecycle draft V0.1
Archive
Off
Document title
Schedule 27 RMP lifecycle draft V0.2
Archive
Off
Problem Statement
The information required by the DNO to create an Export Metering Point sits with the Consumer rather than the Electricity Supplier, and leads to the Electricity Supplier acting as an unnecessary third party in the process. This is leading to unnecessary time being added to the process, negatively impacting Consumers and the journey to Net Zero. This is particularly apparent for large new housing developments, which may have several tens of thousands of Export Metering Points to create with the same DNO and require the use of the Bulk Request process. This process is cumbersome and has no two DNOs operating the process in the same way.
Stages Selection
SME
SME Role
Lead Assurance Analyst
R0321 submission form
R0321 Change Report (Proposal Plan) Approved 05.05.26
R0321 Consolidated Impact Assessment Responses v1.0 PUBLIC
R0321 Update to Plan V1.0 approved 18.08.26
R0321 Change Report (For Consultation) approved 18.08.26
Company Name
-
Review status
Review required
Number of Displayed Register Digits Data Item linkage
Date of latest update
Type
Change
ID
R0317
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
11/05/2026 - The appeal window has now closed. This Change will be implemented on 6 November 2026.
Summary
A Data Integration Platform (DIP) Data Item, DI-091 ‘Number of Displayed Register Digits’ that was implemented as part of MHHS has been incorrectly linked to the existing J0478 ‘Number of Register Digits’ in the Energy Market Data Specification, instead of the existing J2313 ‘Number of Displayed Register Digits’.
Status
Implementation Date
06 November 2026
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- The proposed solution is to conduct a correction exercise to unlink the DIP Data Item DI-091 ‘Number of Displayed Register Digits’ from the Data Item J0478 and it should then instead be linked to the Data Item J2313.
Proposed Solution Document
Document title
R0317 Draft Legal Text 23.02.2026.zip
Archive
Off
Document title
R0317_Draft Legal Text (For Consultation)_v0.2
Archive
Off
Document title
R0317_Draft Legal Text (For Final Recommendation)_v1.0
Archive
Off
Problem Statement
A linkage error has been identified as part of BSC CP1622 and REC Change Proposal R0300 where the DIP Data Item DI-091 has been incorrectly linked to the existing J0478 ‘Number of Register Digits’ in the EMDS at MHHS Go-Live, instead of the existing J2313 ‘Number of Displayed Register Digits’. As a result, contrary to the MHHS design and intended linkage, the EMDS incorrectly details the DI-091 in DIP interfaces, including the IF-005 and IF-006 (both REC-owned) and several other DIP Interfaces, even though the DIP reference appears correct (DI-091). It is important that EMDS is an accurate reflection of Market Messages and Data Items. Without correction this Issue may cause issues to future market entrants.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
R0317 submission form
R0317_Consolidated Consultation Responses_PUBLIC
R0317_Change Report (Final Recommendation) v1.0 Approved 27.05.26
Company Name
-
Review status
Review required