Code modifications

Ofwat has the power to approve or reject code modifications. Recommendations to approve or reject code modifications are made by the panel, which is made up of elected members from wholesalers and retailers, plus three independent members appointed by Market Operating Services Limited (MOSL).

Below is a list of the code modification decisions we have made to date.

Reference Code modification Decision Date implemented
CPM001 Change Proposal Form Update Approved 3 July 2017
CPM003 Revised Market Incident Management Plan Committee Composition Approved 1 December 2017
CPM004 Board Nomination Process Extension Approved 15 September 2017
CPM006 Introducing a process for Urgent Change Proposals Revision required
CPM008 Redistribution of Market Performance Standards Charges Approved 29 March 2019
CPM009 Further Board Nomination Process Extension Approved 16 March 2018
CPM013 Voting Customer Representative Approved 20 September 2019
CPM014 Market Performance Standards Charges Redistribution Payment Clarification Approved 26 July 2019
CPM016 Panel Voting Majorities Approved 23 August 2019
CPW005 Wholesale Retail Code Inconsistency Approved 28 February 2019
CPW010 Emergency Contact Details Approved 28 December 2018
CPW012 Flags on D1 Disaggregated Settlement Report  Rejected
CPW013 Meter Reading Validation  Rejected
CPW014 CSD 0301 Updates Approved 18 May 2018*
CPW015 CSD 0101 Clarification Approved 2 October 2017
CPW016 CSD0104 Clarification – Meter Networks Approved 2 October 2017
CPW017 CSD0105 Clarifications and updates Approved 2 October 2017
CPW018 Clarification of Unsecured Credit Allowance Approved 23 April 2018
CPW019 Alternative eligible credit support Approved 31 July 2018
CPW020 Proposal to amend the wording in the F02 Complaint Form Approved 1 December 2017
CPW021 Negotiating Alternative Eligible Credit Support reasonably and in good faith Approved 14 July 2017
CPW022 New Connection Retailer Unknown Approved 18 May 2018*
CPW023 Market Entry and Re-Assurance Updates Approved 12 March 2018
CPW024 Settlement Renaming and Report Issuing Updates Approved 1 December 2017
CPW025 Extending TCORR Functionality for Inactive Data Items Approved 10 September 2018
CPW026 Removing SPID version design Approved 28 September 2018
CPW027 QC Error Code Approved 18 May 2018
CPW028 Unpaired SPIDs Approved 26 October 2018**
CPW029 & CPM007 GDPR and Data Protection Provisions Updates Approved 30 March 2018
CPW030 Market performance framework for 2018/19 Approved 29 March 2018
CPW031 Extending the new connection suspension period Approved 3 March 2018
CPW032 Amend H/04 to clarify the tariff effective date Approved 28 September 2018
CPW033 Meter effective to date field in MDS_METER report Approved 26 October 2018**
CPW034 Housekeeping changes to GDPR Personal Data warning Approved 25 May 2018
CPW035 F/01 Form amendments Approved 28 September 2018
CPW036 G/02 & G/03 Trade effluent form amendments and creation Approved 28 September 2018
CPW037 Removing the Error Codes list from CSD 0301 Approved 28 September 2018
CPW038 Tariffs Report updates Approved 17 May 2019
CPW039 Deferral of final settlement runs Approved, subject to modifications 31 August 2018
CPW040 Changes to the content of the NAPS report Approved 17 May 2019
CPW041 G read removal governance Approved 29 March 2019
CPW042 Provision of adding re-read flag into the MDS meter reads file Approved 17 May 2019
CPW043 Drafting clarifications for CPW028 Approved 26 October 2018
CPW044 Aligning the codes with market use of digital certificates Approved 3 December 2018
CPW045 Service management interface updates Approved 3 December 2018
CPW046 Changes to the unplanned settlement process Approved 3 December 2018
CPW047 Enabling Sewerage Wholesalers to create & manage meter networks Approved 26 July 2019
CPW048 Alternative payment terms Approved 19 December 2018
CPW049 & CPM012 Operational Performance Standards Review Approved 1 April 2019
CPW050 Changes to the long unread meters report Approved 26 July 2019
CPW051 Market Incident Management Plan amendments Approved 29 March 2019
CPW052 Improving the transparency of Alternative Credit Arrangements Approved 29 March 2019
CPW053 Market Operator Transaction Processing and Reporting Approved 17 May 2019
CPW054 Housekeeping Changes to Market Codes Approved 29 March 2019
CPW055 Wholesale Retail Code Inconsistency Approved 28 February 2019
CPW056 Cascade Erasure Approved 8 November 2019
CPW057 Improving the transparency of Credit Guarantee Arrangements Approved 30 September 2019
CPW058 Removing Processes A1-A5 (New Connections) Approved 26 July 2019
CPW060 Clarifying credit scores and ratings for the purposes of Unsecured Credit Allowances Approved 30 September 2019
CPW061 Unsecured Credit Allowance reflecting payment history Revision required
CPW062 Household indicator flag Rejected
CPW064 Changes to the Corrective Settlement Run for Individual Supply Points Approved 14 February 2020
CPW065 Retailer Notifications Approved 15 May 2020
CPW066 Estimation Review Approved 14 February 2020
CPW067 Bulk Submissions of Service Requests by MS Excel Revision required
CPW068 and CPM017 Market Incident Management Plan Committee Revisions Revision required
CPW072 Setting MPS15 Charges to Zero Approved 1 November 2019
CPM011 MOSL invoices and payment terms Approved 31 July 2018
CPM010 Amendments to the retailer board nomination process Approved 31 July 2018
CP0001 Customer Protection Code of Practice Change Proposal Approved 28 February 2019
CP0002 Enabling Microbusiness Customers to orally conclude contracts Approved 13 June 2019
CP0003  Customer Protection Code of Practice Change Proposal Approved 6 September 2019

*CPW14 and CPW22 have had their implementation date amended

**CPW028 and CPW033 have had their implementation date amended

Other useful links

The Change Register – MOSL