The Clock: 18 June 2025

The Clock newsletter provides participants with updates and key information to support delivery of the MHHS Programme. The Clock will signpost you to events, plans, reports and documents to assist in planning, design, development, testing and delivery.

In this issue of The Clock we update you on:

• Participant Checklist
  
  • REMINDER: Programme Participant Information Request (PPIR): Migration Contact Information for Central Parties 
  • REMINDER: Migration Supplier Submission Round 2 - two days to go! 
  • REMINDER: Systems Integration Testing (SIT) Functional & Migration Exit Reports 
  • NEW! Change Request CR062 issued for Impact Assessment 
  • NEW! Milestone 8 (M8) Code Changes Artefacts issued for formal Code Body consultation 
  • REMINDER: Design Interim Release 8.11 Artefacts published 
  • NEW! SIT Functional Test Scenarios & Test Cases updated 
  • NEW! SIT Scope Traceability Document uplifted  
• MHHS Qualification Updates
  
  • REMINDER: Initial Qualification Assessment Document (QAD) Submission for Wave 1 participants 
  • NEW! Qualification Testing (QT) Entry Checkpoints 1 and 2 for Wave 1 participants  
  • NEW! Updated Non-Systems Integration Testing (SIT) Supplier & Agent Requirements to Test Traceability Matrix (RTTM) Templates 
  • REMINDER: Legacy Settlement Arrangements Management Letters – the deadline to return a signed letter passed on 31 May 2025  
• Upcoming events
  
  • Upcoming Governance Meetings 
  • Migration & Cutover Advisory Group (MCAG): 24 June 2025 
  • REMINDER: Qualification Testing Framework (QTF) Onboarding & Training Webinar: 24 June 2025  
  • Cross-Code Advisory Group (CCAG): 25 June 2025 
• Elexon Update
  
  • NEW! Data Integration Platform (DIP) Change Consultation: DCR0003   
• Retail Energy Code (REC) Update
  
  • NEW! REC Consultation on New Metering Guidance Documents 
  • NEW! REC Consultation for REC Change Proposal (CP) R0241: MHHS Incremental Changes for go live 
  • NEW! REC MHHS Webinar: New Meter Configuration Tables: 9 July 2025  
  • NEW! REC Release for MHHS Milestone 8 (M8) Pre-release Webinar: 16 July 2025 
  • REMINDER: Retail Energy Code (REC) Code Manager Legacy Assurance Director Assertion 

The Clock

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