Data Latency SLA Alignment for Gas Enquiry Service
Date of latest update
Type
Change
ID
R0277
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the February 2026 REC Release.
Summary
The current performance level for the processing of Data from CDSP is no longer fit for purpose and does not reflect the operational capability of the service. The performance level was originally conceived as part of the CSS programme in 2022 and operational reality has shown it is not required by industry. A revision of the performance level will align service performance metrics with system performance and deliver economic benefit.
Change Plan
Proposal Plan approved at Change Panel
Completed
Start:
Due:
Completion:
07 Oct 2025Impacted REC Services
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
R0277 Legal Text For Consultation
Archive
Off
Problem Statement
The current performance levels for the processing of data from CDSP is no longer fit for purpose and does not align with system or service performance. The CSDP is also not meeting these performance levels on a monthly basis. While there are no known issues on data latency raised by users, this change to clarify performance levels is needed for the GES reinstated contract and to ensure ongoing service delivery.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
I0277 submission form
I0277 Change Report (Proposal Plan) approved 07/10/2025
R0277 Change Report (For Consultation) v1.0
R0277 Change Report (Final Recommendation) Approved 26.11.25 v1.0
Company Name
-
Review status
Review required
SFIC to CMRM - missing Scenario Variant in D0126 / MM00016
Date of latest update
Type
Change
ID
R0276
Change Category
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal has been implemented as part of the June 2026 REC Release.
Summary
It has been raised to the Code Manager by a Party that the Scenario Variant of Supply Fault Information Centre (SFIC) to Crowded Meter Room MEM (CMRM) is missing from the D0126 / MM00016 (Asset Condition Report Response / Clearance) Market Message. This should have been introduced as part of REC Change R0043 which introduced the role of the CMRM.
Change Plan
Change Report (Proposal Plan) approved by Change Panel
Completed
Start:
Due:
Completion:
16 Sep 2025Status
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
Proposed Solution Document
Document title
SFIC to CMRM - missing Scenario Variant in D0126 red-lining (IA)
Archive
Off
Document title
SFIC to CMRM - missing Scenario Variant in D0126 red-lining (consultation)
Archive
Off
Problem Statement
CMRMs can send the D0135 / MM00023 Asset Condition Report Market Message to the SFIC, but the SFIC cannot send a response on the D0126 / MM00016 Asset Condition Report Response / Clearance Market Message to confirm the outcome of their investigation.
Stages Selection
R0276 submission form
R0276 Change Report (Proposal Plan) V1.0 approved 16.09.25
R0276 Consolidated Impact Assessment Responses PUBLIC v1.0
R0276 Change Report (For Consultation) V1.0
R0276 Consolidated Consultation Responses v1.0
R0276 Change Report (Final Recommendation) V1.0 approved 17.12.25
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
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
Transfer of Standard Settlement Configuration and Time Pattern Regime Data Item Ownership
Date of latest update
Type
Change
ID
R0243
Change Category
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
This Change Proposal was implemented as part of the 7 November 2025 REC Release.
Summary
From MHHS go live (M8), responsibility for maintaining the SSC and TPR valid set will transfer to the REC Code Manager. Without an associated change to ownership of the specific data items, cross governance issues will arise delaying the resolution of future changes to the use of SSC and TPR data in enduring retail processes.
Change Plan
Change Report (Proposal Plan) published
Completed
Start:
12 Feb 2025Due:
29 Jul 2025Completion:
29 Jul 2025Proposal Plan approved
Completed
Start:
29 Jul 2025Due:
05 Aug 2025Completion:
05 Aug 2025Impacted REC Parties and Market Participants
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 Document
Document title
R0243 - Data Items REDLINED
Archive
Off
Problem Statement
From MHHS Go Live at MHHS Milestone M8 ‘Code changes delivered’, responsibility for maintaining the SSC and TPR valid sets will transfer to the REC Code Manager. Without an associated change to ownership of the specific Data Items, cross governance issues will arise delaying the resolution of future changes to the use of SSC and TPR data in enduring retail processes.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
Change Proposal form
R0243 Change Report (Proposal Plan) v1.0 APPROVED 05.08.2025
R0243 Change Report (Consultation) v1.0 11.08.2025
R0243 Consolidated Consultation Responses PUBLIC v1.0
R0243 Change Report (Final Recommendation) v1.0 approved 24.09.25
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
Shared Sites in Electricity Enquiry Service (EES)
Date of latest update
Type
Issue
ID
I0231
Change Category
Change Path
Priority
Urgent
No
Latest Update
30/03/2026 The Proposer has withdrawn this Issue following discussions with industry, where impacted Parties advised waiting for the completion of MHHS migration before progressing this Issue and solution development. The window to adopt this Issue has now closed.
Summary
There is a concern regarding shared sites (as defined by BSCP550) that have multiple suppliers linked to them. The investigation revealed a lack of visibility of these sites, and it appears that the industry is similarly uninformed. Elexon, the REC, and the wider industry do not have a consistent way of identifying these shared sites. Therefore, there is a good chance that agents are holding shared sites within their portfolio without knowing it. We would like to explore whether the EES Online Portal has any flags or mechanisms that could help identify these shared sites.
Impacted REC Services
Status
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Proposed solution summary
- A flag on EES that can help everyone clearly identify the shared site, the primary MPAN and all of the pseudo MPANs attached to it.
Problem Statement
There is a concern regarding shared sites (as defined by BSCP550) that have multiple suppliers linked to them. The investigation revealed a lack of visibility of these sites, and it appears that the industry is similarly uninformed. Elexon, the REC, and the wider industry do not have a consistent way of identifying these shared sites. Therefore, there is a good chance that agents are holding shared sites within their portfolio without knowing it. We would like to explore whether the EES Online Portal has any flags or mechanisms that could help identify these shared sites. If not, could these be added?
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
vaishnsharma@deloitte.co.uk
Issue Proposal Form
Company Name
-
Review status
Review required
D0303 flow following MHHS design changes
Date of latest update
Type
Issue
ID
I0230
Other Industry Codes impacted
Change Path
Priority
Urgent
No
Latest Update
29/04/2026 - This Issue has been withdrawn by the Proposer, as there was not a strong preference amongst MAPs of which temporary solution option (if any) should be progressed. Many MAPs already have workarounds in place, and a permanent solution is expected to be progressed in the future through a joint REC / BSC change. The adoption window has closed.
Summary
As part of Market Wide Half Hourly Settlement (MHHS) design, the requirement to provide Data Item Effective from Settlement Date {REGI} (J0049 / DI50025) in the Notification of Meter Operator, Supplier and Metering Assets installed / removed by the MOP to the MAP Market Message (D0303 / MM00240) has been changed from mandatory to optional. This means Meter Asset Providers (MAP) may not receive it.
Change Plan
Change Report (Proposal Plan) approved at Change Panel
Completed
Start:
Due:
Completion:
04 Nov 2025Impacted REC Parties and Market Participants
Status
Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Problem Statement
The Effective from Settlement Date {REGI} Data Item being optional rather than mandatory inside the Notification of Meter Operator, Supplier and Metering Assets installed / removed by the MOP to the MAP Market Message means that MAPs may not receive this information required for billing purposes.
Stages Selection
Stages Selection
SME
SME Role
Lead Technical Analyst
Issue Proposal Form
I0230 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
Company Name
-
Review status
Review required
Supply Point Enquiry API Technical Specification Updates
Date of latest update
Type
Change
ID
R0229
Change Category
Change Path
Priority
Urgent
No
Latest Update
10/02/2025 - Change withdrawn and will be progressed as a Housekeeping change under R0239 Housekeeping Feb 2025. The adoption window has now closed.
Summary
The content detailed in Section 4.2 Responses is incorrect. We would like to amend the responses included in this section so that users are able to access the correct technical specifications for the service that they are consuming.
Change Plan
Change discussed at Change Panel
Completed
Start:
Due:
Completion:
21 Jan 2025Status
Implementation Status
Date Raised
Fuel
REC Decision Maker
Date of Update to Priority
Solution Development
Problem Statement
The example responses detailed in section 4.2 are broken down as ‘mprn’ with three demoed data items; ‘mprn’, ‘installation name’, and ‘network name.’ this is however not reflective of the correct responses that would actually be returned on an API call. The actual structure is ‘supplier’ with the demoted data items actually being ‘amr_indicator’, ‘amr-sp’, and ‘csep_id.’ Fundamentally, this would mean that users are consuming incorrect information when looking to this document for guidance. This could potentially be causing negative impacts when the document is relied upon, especially for newer users seeking guidance.
Stages Selection
SME
SME Role
Lead Technical Analyst
SME Role
Lead Assurance Analyst
SME User
amoden@deloitte.co.uk
API GES Supply Point Enquiry Technical Specification v2.0.pdf
Change Proposal Form
Company Name
-
Review status
Review required