Migration Overview


Group_696.jpg

Migration is the process by which Meter Point Administration Numbers (MPANs) will be migrated from the legacy arrangements to the new MHHS arrangements, and in the case of Reverse Migration, back to the Legacy arrangements from the MHHS arrangements.

The technical processes by which the migration will take place are outlined in the suite of Migration Design Artefacts. Participants should familiarise themselves with these Artefacts, as these are the processes that participants will need to follow to successfully migrate their portfolios into the new MHHS arrangements. Visit the Migration Design page of this website to view these Artefacts.

To assist participants through Migration, the Programme has also produced the Migration, Cutover and Data Strategy document and the Data Cleanse Plan, which you can view below.

To understand more about Migration, participants can attend the Migration Working Group (MWG). Please email [email protected] if you would like to join MWG.

If you have any questions about Migration, please email [email protected]


Data Cleanse Plan

The purpose of the Data Cleanse Plan is to set out the data improvement activities that are required to be undertaken by Programme participants, to ensure data is of the required quality and completeness before the cutover to the new arrangements at M10 and the start of migration at M11.

On Tuesday 27 February 2024, the Migration and Cutover Advisory Group (MCAG) approved an updated v2.0 of the Data Cleanse Plan, which you can view below: 

Data Cleanse Plan

Minor updates to the original v1.0 of the Data Cleanse Plan, which was approved on Monday 24 July 2023, were required as new information had come to light as Programme participants had progressed against their data improvement activities.

The Data Cleanse Working Group (DCWG) are overseeing the data improvement activities set out within the Data Cleanse Plan.

If you have any questions, please email the Transition & Operational Readiness team at [email protected]

online2.jpg

documents.jpg

MHHS Service Management Strategy 

The MHHS Service Management Strategy document defines the strategy which will underpin the management of the new MHHS services. With the launch of key new central systems at Milestone 10 (M10) and generally much greater interconnectivity across the industry as a result of moving to the MHHS Target Operating Model (TOM), there is a requirement to introduce new service management capability to the industry to manage the delivery of the services provided by these new systems. 

Within this document, only the MHHS Service Management strategy is considered. The strategy is intended to be high-level and provides a starting point and a framework for subsequent delivery phases to be delivered by Elexon, namely the Service Design, to design the requisite lower-level detail.

On Tuesday 27 February 2024, the Migration and Cutover Advisory Group (MCAG) approved v1.0 of the MHHS Service Management Strategy, which you can view below:

MHHS Service Management Strategy

 If you have any questions, please email the Transition & Operational Readiness team at [email protected]


Milestone 15 (M15) Acceptance Criteria Document Approved 

The M15 Acceptance Criteria document defines the acceptance criteria for M15, including the Meter Point Administration Number (MPAN) states that will be ‘acceptable’ and ‘unacceptable’ at M15. 

M15 is planned to take place in October 2026, and is currently defined as ‘Full Transition Complete’, i.e., all MPANs have been migrated to the MHHS arrangements and none remain in the legacy arrangements. 

The M15 Acceptance Criteria document was approved and baselined to v1.0 at the Testing & Migration Advisory Group (TMAG) meeting on Wednesday 20 December 2023. You can view the approved document below:

M15 Acceptance Criteria v1.0
 
If you have any questions, please email the Migration Team at [email protected] 

papers.jpg
abstract_design.jpg

Migration Thresholds Document Approved

During the Migration period of the Programme, a significant number of messages will be sent between industry participants which far exceeds the volumes sent during standard operations.  

To ensure that participants and Central Systems can support these increase volumes, an upper threshold that limits the total number of migrations that can be initiated across the industry on a particular day must be set. 

The Migration Thresholds Document defines that upper threshold. The document also breaks the threshold down to the Licensed Distribution System Operator (LDSO) level. This ensures that LDSOs are aware of the maximum number of migrations they will be expected to support. 

Appendix 1 summarises the modelling that was used to define the thresholds for LDSOs as set out in the document.

The document was approved by the Testing and Migration Advisory Group (TMAG) on Monday 20 November. You can find the baselined v1.0 of the Migration Thresholds Document below: 

Migration Thresholds Document

Migration Thresholds Document: Appendix 1

If you have any questions, please email [email protected]


Migration, Cutover and Data Strategy Baselined and Approved

The  Migration, Cutover and Data Strategy document sets out the strategy and approach that the Programme will follow to develop a suite of policies, processes and other Artefacts to support Migration, cutover and data cleansing and population. The document also details the strategic principles that the Programme will follow to develop these detailed Artefacts, as well as the timescales under which this development will occur. 

At the extraordinary Testing & Migration Advisory Group (TMAG) meeting on 31 May 2023, the Migration, Cutover and Data Strategy was approved, subject to any open comments being addressed, where relevant.

This document has now been baselined and can be viewed below: 

Migration, Cutover and Data Strategy

If you have any questions, please email [email protected]

blue clock