to assure maximum possible accuracy of the information concerning the consumer to whom the report relates. (2) Matching information in a file In assuring the maximum possible accuracy under paragraph (1), each consumer reporting agency described in section 603(p) shall ensure that, when including information in the file of a consumer, the consumer reporting agency— (A) matches all 9 digits of the social security number of the consumer with the information that the consumer reporting agency is including in the file