MCR 0053 – Reject if MM received for Group unmetered sites

Where the following market messages are received for a group unmetered site (either at GMPRN or TMPRN level)

they should be rejected for reason IMP – invalid MPRN:

010 – Meter Point Registration (rejected with 101R or 102R as appropriate)

016 – Change of Legal Entity (rejected with 116R)

017 – Change to Meter Point Status (rejected with 117R)

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