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XRN 5345
Deferral of creation of Class change reads for DM to NDM and NDM to DM sites at transfer of ownership

Last Updated
01 May 2024
Release Type
Implementation Date
Proposer Xoserve Impacted DSC service area

Service Area 5 (Previous Dec 18 – Mar 21)

Metered Volume and Metered Quantity

Customer Change Team Leader


*Following a recent review of the relevant section of the UNC (M, 5.13.1-7), the current functionality within the CDSP systems is compliant and, therefore, this change has been withdrawn.*

CDSP reject potentially valid opening reads where there has been a Class change on transfer date.

There are not a large number of elected DM sites (Class 2) so the number of instances where this will occur is limited, but at the moment the UK Link system is not allowing the opportunity to the incoming Shipper to provide an Actual Meter Reading until D+5 as defined within the UNC where the site is transferring from a DM Class to an NDM Class (e.g. Class 2 to Class 3 or 4).

The same window applies in the UNC where the Supply Meter Point moves from NDM to DM, this might work more effectively as typically an estimate is generated on D which may be replaced as an actual without being flagged as a replacement reading.

This change will, in the analysis period, assess each of the scenarios of migration from one Class to another which involve a Class change from DM to NDM and vice versa and understand the current volumes associated with each scenario.  It will make recommendations for changes, if necessary, following assessment with Shippers.

Impacted Customer Types

  • Shipper


Document title Comment Last updated CHMC outcome
Change Proposal N/A 29/03/2021 Approved at ChMC on 07/04/2021
Initial Review Stage not used N/A N/A
DSG Discussions N/A 26/04/2021 N/A
High Level Solution Options Stage not yet reached N/A N/A
Solution Review Stage not yet reached N/A N/A
Detailed Design Stage not yet reached N/A N/A
Evaluation Quotation Reports (EQR) Stage not yet reached N/A N/A
Business Evaluation Reports (BER) Stage not yet reached N/A N/A
Change Completion Reports (CCR) Stage not yet reached N/A N/A


Initial Review
Change Proposal Raised 29/03/21
Status Awaiting ChMC approval
Approved to Capture 07/04/21
Status Change withdrawn - 01.05.2024
Solution Consultation
Expected: 00/00/00
Status Awaiting
Awaiting Delivery
Expected: 00/00/00
Status Awaiting
In Delivery
Expected: 00/00/00
Status Awaiting
Expected: 00/00/00
Status Awaiting

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