An identity system and method that stores identity information related to different principals and stores the identities on different or disparate systems such that the different systems can use the identities. A synchronization process synchronizes identity information and rules based on identity information between a primary computer system and a disparate secondary computer system. Accordingly, the secondary computer system has a representative database of identity information following receipt of the converted information, wherein the representative database is representative of a primary database of identity information stored on the primary computer system. In order to synchronize a conversion may take place. The conversion process may be performed by a dedicated process designed for the secondary system. Alternatively, the conversion is performed by a generalized process using mapping tables designed to convert identity information into multiple different formats.