Abstract: Systems and methods which provide for bidirectional data parity in a multi-service connected environment using a canonicalization and order connection data structure are described. Bidirectional data parity logic using a canonicalization and order connection data structure with respect to a plurality of systems of a multi-service connected environment may provide for the state of a particular order and/or other data for that order being accurately reflected in each such system for which corresponding record is maintained. Using a canonicalization database and an order connection database, bidirectional data parity logic may recognize all records for a particular instance of an order as being for that order, and thus provide data parity for that order throughout all systems having a record for that order instance.