We are pursuing a data warehouse project that requires replication of ININ tables. Replication requires primary keys. ININ Support indicated that adding the primary keys should not cause a problem, but could be problematic with each new DB release. Has anybody else extended the DB schema by adding primary keys?

We have been replicating data since 2.4 (2008) with no issues. We are on 3.0 SU16 now. Ensure that the fields you choose do constitute a unique identifier.