To use extended limits, make sure that both the primary and replicate Replication Server are upgraded to site version 12.5 or later, which automatically sets the LTL version to 400. In addition, make sure that all routes using extended limits are set to 12.5 or later. If you are using Adaptive Server, make sure that both the primary and replicate databases are set to version 12.5 or later. Both the primary and replicate databases must be configured for the same page size.
See “Replication definition restrictions in mixed-version systems” for information about using extended limits with Replication Server version 12.1 and earlier. See also the Replication Server white paper “Using Adaptive Server Enterprise version 12.5 with Replication Server version 12.1 and earlier: Schema-length and compatibility issues.”