In a method for providing provisioning information, a central data processing system receives from a transaction data processing system, an encrypted user datum associated with a client user of the transaction data processing system; receives from at least one of a plurality of account administrator data processing systems, a response comprising a notification that a user account administrated by that account administrator data processing system is associated with the client user; receives an account administrator selection message including identification of a user-selected account administrator from an account administrator list; transmits to the account administrator data processing system associated with the user-selected account administrator, a provisioning request for client user account provisioning information; receives from the account administrator data processing system associated with the user-selected account administrator, the client user account provisioning information; and transmits to the transaction data processing system, the client user account provisioning information.