If you changed the default sort order for Adaptive Server to a new “nocase” sort order for Chinee or Japanese character sets, make sure before you downgrade to Adaptive Server 15.0 or 15.0.1 that you switch to a sort order that is compatible with the downgraded version.. Switching a sortorder means all user indexes need to be reindexed. Please refer to System Administration Guide Chapter 9 "Configuring Character Sets, Sort Orders, and Languages" for details on how to change server's default sortorder. If sp_downgrade is called when the new nocase sortorder is in use, the error message "Cannot downgrade to '%1!' server, which does not support server's current default sortorder" will be raised and the downgrade process will be aborted.
