The structure of a system record is different from the SBR in that each system record contains a system and local ID pair. The remaining information contained in the system records of an enterprise record is used to determine the best data for the corresponding SBR. If an enterprise record only contains one system record, the SBR is identical to that system record (less the system and local ID information). However, if the enterprise record contains multiple system records, the SBR might be identical to one system record but will more likely include a combination of information from all system records.