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
CPM009 Further Board Nomination Process Extension Approved 16 March 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
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
CPW036 G/02 & G/03 Trade effluent form amendments and creation Approved 28 September 2018
CPM011 MOSL invoices and payment terms Approved 31 July 2018
CPM010 Amendments to the retailer board nomination process Approved 31 July 2018

*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