Sybase certifies that each version of Adaptive Server can connect to earlier releases through Component Integration Services. Component Integration Services is tested and certified to connect to earlier versions of Adaptive Server.
Sybase does not certifiy that Component Integration Services running on earlier versions of Adaptive Server can connect to later versions. You may encounter errors if an ealier version of Adaptive Server maps a proxy table to a later version and the remote table uses functionality not available in the earlier release.
For example, if you have a local and a remote server, both running Adaptive Server version 15.0, be sure to upgrade the local server first, if you are performing an upgrade on each of them. If one is to be upgraded but not the other, the local server should be upgraded first.
