Because of harmonisation we are unable to use the original spare S10 to S20 as they are already in use in RoI. By reserving S40-S49 we are
catering for an NI Supplier entering the RoI market and retaining their SupplierID. By including the existing and potential RoI SupplierIDs we are
catering for a Supplier in the RoI market entering the NI market and retaining their SupplierID.