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 the Group Unmetered Change of Supplier.

The reasons for the change are two fold:-

• A Supplier Unit entity has been added to the Data Model and will be required within Group Unmetered Change of Supplier Processing.

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

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