In order to introduce the Single Electricity Market there are a number of changes required to the existing Retail Market processes. This MCR relates to the Market Process surrounding a new Technical MPRN connection.

The reasons for the change are two fold:-

•A Supplier Unit entity has been added to the Data Model and will be required within Market Communications for New Technical MPRN and Market Messaging

• Additional validation rules will be required surrounding Trading Site Supplier Units

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