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XRN 5318
Assessing Supplier MPID Reassignment

Last Updated
10 Jan 2022
Release Type
Implementation Date
08 Dec 2021
Proposer E.ON Impacted DSC service area


Not applicable

Customer Change Team Leader


This XRN is being raised to explore the impacts to all CDSP systems including, but not limited to, UK Link, Gemini, DES, CMS and DDP.

The investigation is to assess the implications and approximate costs to replicate the MPID reassignment principal in electricity (although not an exact process replica, it should be still designed to best suit gas).

The exploratory review should consider:

 - An MPID moving between Supplier Licenses within the same group of companies

 - An MPID moving between Supplier Licenses within different group of companies but driven by SoLR or acquisition activity (anything in addition of 5144 findings)

 - Limited to Supplier reassignments but where the Shipper/Supplier share the same ID, the ability to separate them and both still be recognised

 - High-level outlining of suggested amendments to the MDD process documents (or any other documents) which would be required to deliver the solution.

This XRN is to outline the possible options (and associated costs) for an industry decision to be made at the ChMC. The decision should be if any options should be progressed or not. If the process is to remain as-is then suggested wording to MDD process documentation will need to be put forward to CoMC.

For the avoidance of doubt, this XRN is exploratory analysis only, any changes will need to be a part B XRN or a new XRN.

Impacted Customer Types

  • GT
  • IGT
  • NGT
  • Shipper
  • DNO


Document title Last updated Type
CCR - XRN5318/5319 09/Dec/2021 PDF
XRN5318 Change Proposal 26/Aug/2021 PDF


Initial Review
Start: 01/02/21
Status Change Proposal raised
Approved to Capture 11/02/21
Status ChMC approved into Capture
Solution Consultation
Expected: 00/00/00
Status Stage not used
Awaiting Delivery
Expected: 00/00/00
Status Stage not used
In Delivery
Expected: 00/00/00
Status Stage not used
Analysis Complete 08/12/21
Status CCR Approved at ChMC 08/12/21

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