Market Messages

The Retail Electricity Market Design has 89 market messages which are sent as XML messages over the internet. The Market Messages cover the following areas:

  • COS (Change of Supplier)
  • Customer Data
  • DA & DP (Data Aggregation and Data Processing)
  • DUOS (Distribution Use Of System)
  • Meter works
  • New connections
  • Unmetered

ESB Networks have provided software for the messaging solution. The Electricity Market Messaging Application (EMMA) sends and receives messages. Webforms are used to create market participant messages and the readings processor converts readings messages to legacy formats.

Message No. Message Description Market Message Guide Applicable
010 Registration Request Meter Registration
011 Cancel Registration Request Meter Registration
011A Cancel Change of Supplier Agreement Meter Registration
012 Objection to Change of Supplier Meter Registration
012W Withdrawal of Objection to Change of Supplier Meter Registration
013 Customer Details Change Customer and Data Agreements
014R Customer Details Rejection Customer and Data Agreements
015 Change of SSAC and or Supplier Unit Data Aggregation
016 Change Of Legal Entity Customer and Data Agreements
017 Meter Point Status Change Request Meter Works
021 DeRegistration Request Meter Registration
030 MeterWorks Request Meter Works
101 New Connection Registration Acceptance Meter Registration
101P New Connection Provisional Acceptance Meter Registration
101R New Registration Rejection Meter Registration
102 Change of Supply Registration Acceptance Meter Registration
102P Change of Supplier Provisional Acceptance Meter Registration
102R Change of Supplier Registration Rejection Meter Registration
105 Change of Supplier Confirmation Meter Registration
105L Change Of Supplier Confimation Customer Loss Meter Registration
106D Meter Point Status Confirmation DeEnergisation Meter Works
106E Meter Point Status Confirmation Energisation Meter Works
110 Notification to Old Supplier of CoS Meter Registration
111 Registration Cancellation Meter Registration
111A Change of Supplier Cancellation Notification Meter Registration
111L Registration Cancellation Customer Loss Meter Registration
111R Change of Supplier Cancellation Rejection Meter Registration
112 Notification of Objection Meter Registration
112R Notification of Objection Rejection Meter Registration
112W Withdrawal of Objection Meter Registration
114 Change of Customer Details Confirmation Customer and Data Agreements
115 Change of SSAC and or SupplierUnit Confirmation Data Aggregation
115R Change of SSAC and or SupplierUnit Rejection Data Aggregation
116 CoLE Confirmation Customer and Data Agreements
116A Change Of Legal Entity Confirmation Customer and Data Agreements
116N CoLE Notification Customer and Data Agreements
116R CoLE Rejection Customer and Data Agreements
117D Change In Energisation Status Delay Meter Works
117R Meter Point Status Request Rejection Meter Works
122 DeRegistration Confirmation Meter Registration
122R DeRegistration Rejection Meter Registration
130D MeterWorks Request Delayed Meter Works
130R MeterWorks Request Rejection Meter Works
131 Work Status Meter Works
137R Rejection Of Appointment Meter Works
208 Replacement Reading Data Processing
210 Supplier Provided Reading Data Processing
252 Request for Special Reading Data Processing
260 Observation of Problem Damage or Tampering Meter Works
261 Resolution of Problem Damage or Tampering Meter Works
300 Validated Non Interval Readings Scheduled Data Processing
300S Validated Non Interval Readings Special Data Processing
300W Withdrawn Non Interval Readings Data Processing
301 Meter Point Characteristics Meter Works
301N Proposed Meter Point Characteristics Meter Works
303R Customer Read Rejection Data Processing
305 Non Settlement Estimates Data Processing
306 Meter Point Status Change Confirmation DeEnergisation Meter Works
306W Meter Point status Change DeEnergisation Withdrawn Read Meter Works
307 Meter Point Status Change Confirmation Energisation Meter Works
307W Meter Point Status Change Energisation Withdrawn Read Meter Works
308 Non Interval Load Factor Reading Exception Data Processing
310 Validated CoS Reading Meter Registration
310W Withdrawn CoS Reading Meter Registration
311 Meter Problems Meter Works
320 Validated CoS Reading Meter Registration
320W Withdrawn CoS Reading Meter Registration
321 Read Cycle Notification Data Processing
330 Non Interval To Interval Change Meter Works
331 Interval Meter Technical Details Meter Registration
332 Non Interval Technical Meter Details Meter Registration
332W Withdrawn Read Non Interval Meter Technical Details Meter Works
341 Import Interval Meter Daily Readings Data Processing
342 Export Interval Meter Daily Readings Data Processing
352R Special Reading Request Rejection Data Processing
507 Designated DUoS Payment Dispute DUoS and Transaction Payments
507C Designated DUoS Payment Dispute Control DUoS and Transaction Payments
591 Non Interval Aggregation Data Aggregation
594 Part GU Aggregation Data Aggregation
595 Interval Import Aggregation Data Aggregation
596 Supplier Copy SMO Data Aggregation
597 Generator Copy SMO Data Aggregation
598 Non Part GU Aggregation Data Aggregation
601 Rejection To Invalid Message Market Gateway Activity
602 Daily Summary Reconciliation Count Market Gateway Activity
700 Unmetered Characteristics Unmetered
700W Unmetered Characteristics Withdrawal Unmetered
701 Unmetered Consumption Unmetered
701W Unmetered Consumption Withdrawal Unmetered