Adaptive Server version 12.5 and later can store data that has different limits than data stored in previous versions. Clients also must be able to handle the new limits the data can use. If you are using older versions of Open Client and Open Server, they cannot process the data if you:
Upgrade to Adaptive Server version 12.5.
Drop and re-create the tables with wide columns.
Insert wide data.
See the Open Client section in this guide for more information.