What are MPANs and MSIDs?
Each point of entry and exit onto a Distribution System Operator’s Distribution System has an associated Metering Point, and each Metering Point has an associated Administration Number (MPAN) and Metering System Identifier (MSID).
MPAN is the term used in the Master Registration Agreement (MRA), while the BSC uses the term MSID. However, as the two terms describe the same entity, they can be used interchangeably.
See What are MPANs and MSIDs? for more information