UK Link Release – November 2021 Release

November 2021 Release Contents

November 2021 Release Scope
Release Implementation
Release Documentation
Who to Contact



On this page you will find:

      • Information about the UK Link November 2021 release
      • A list of the changes due to be implemented within the release
      • Supporting documentation

November 2021 Release scope

The scope for November 2021 Release was approved at the Extraordinary DSC Change Management committee meeting on Monday 30th November 2020. The details of the meeting are available on the Joint Office website.


November 2021 Major Release Implementation

The November 2021 Release is due to be implemented on 5th November 2021 and consists of 6 changes:

  • XRN4941 - MOD0692 - Auto updates to meter read frequency
  • XRN5007 - Enhancement to reconciliation process where prevailing volume is zero
  • XRN5072 - Application and derivation of TTZ indicator and calculation of volume and energy – all classes
  • XRN5091 - Deferral of creation of Class change reads at transfer of ownership
  • XRN5142 - New allowable values for DCC Service Flag in DXI File from DCC
  • XRN5180 - Inner tolerance validation for replacement reads and read insertions

De-Scoped at DSC Change Management Committee on 13th January 2021

  • XRN5186* MOD0701 – Aligning capacity booking under the UNC and arrangements set out in relevant NExAs
  • XRN5187* MOD0696 – Addressing inequalities between capacity booking under the UNC and arrangements set out in the relevant NExAs

UK Link November 2021 Release Design Awareness Material will be available soon.

The scope awareness session for this major release will be available soon.

Release Documentation

This collated list of documentation will be updated as the November 2021 Release work continues.

November 2021 Release – Delivery Plan


November 2021 Release – Circular



Who to Contact

To contact the UK Link November 2021 Release Team please email

Alternatively, you can email

or call

Tara Ross – 0121 229 2705

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