In this blog post, you’ll learn more about the Sybase Error Cannot alter or drop a text configuration referenced by a text index. and the reason for receiving this error
Sybase SQL Error Message
Cannot alter or drop a text configuration referenced by a text index.
Reason for this Error
It is not possible to alter or drop a text configuration referenced by a populated text index or currently being used by a text procedure. Either copy the configuration and alter the copy, or close all cursors on text procedures and truncate all indexes that use the configuration.