1. A computer implemented method for synchronizing account names from a plurality of source security systems, the computer implemented method comprising: responsive to coupling a conversion system between the plurality of source security systems and a target security system, loading identity data from a human resource system and account data from the plurality of source security systems into the conversion system; retrieving a name resolution rule set; generating a unique account name identification for a set of account names associated with an identity using the name resolution rule set; converting the set of account names associated with the identity to the unique account name identification, wherein conflicts between the set of account names associated with the identity are resolved to produce a synchronized set of account names associated with the identity; and storing the synchronized set of account names associated with the identity in the target security system.