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XRN 5675
Implementation of 0836S - Resolution of Missing Messages after CSS implementation and integration with R0067 and 0855 - Settlement Adjustments for SMPs impacted by the Central Switching System P1 incident

This XRN is part of XRN 5711 June 24 Major Release
Last Updated
10 Apr 2024
Release Type
Implementation Date
27 Jun 2024
Proposer SEFE Impacted DSC service area

Service Area 1 (Current Apr 21)

Manage Shipper Transfers

Customer Change Team Leader


This XRN has been raised on the back of the P1 issue.  Circa 84,000 registrations did not have the secured Active Notification issued in accordance with the REC.

The Option selected for resolving this issue, has resulted to inconsistent dates between the CSS and the UK link system, which is responsible for the settlements.

The aim of this change is :

Ensure that Meter Readings can be issued to Shippers as soon as possible related to the P1 Incident

Development of the adjustment process required once the Opening Meter Reading and the CSS Registration Effective Date Meter Reading has been recorded in UK Link systems

Impacted Customer Types

  • Shipper
  • DNO
  • IGT


Document title Comment Last updated CHMC outcome
Change Proposal CP Raised 10/08/23 Approved at ChMC 09/08/23
Initial Review Stage not required  N/A N/A
High Level Solution Options Stage not required  N/A N/A
Solution Review Stage not required  N/A N/A
Detailed Design 3213.5 - VO - PO 14/09/2023 Approved at ChMC 13/09/2023
Detailed Design 3265.4 - VO - PO 10/04/2024 Approved at ChMC 10/04/2024
DSG Discussion

Meeting - 21/08/23

Meeting - 25/03/24

05/04/2024 N/A
Evaluation Quotation Reports (EQR) Stage not yet reached    
Business Evaluation Reports (BER) Stage not yet reached    
Change Completion Reports (CCR) Stage not yet reached    


Change Proposal raised
Change development
Approved into development 09/08/23
Solution development
Stage not required 01/01/01
Detailed design
Detailed Design Change Pack issued 14/08/23
Status Approved at ChMC 13/09/2023
Awaiting delivery
Status Approved at ChMC 10/04/2024
In delivery
Status Approved into delivery
Change implemented

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