2018525 - Msg 1919 can't create index on text, image, unitext datatype - SAP ASE

• Customer is running SAP Adaptive Server Enterprise (ASE) and Sybase Replication Server (SRS) in a Warm Standby Setup
• Some of the tables contain text, unitext, image or rawobject columns
• Msg 1919, Level 16, State 1:
  Server 'ASE', Line 1:
  Column 'c' -- Can't create index on a column of TEXT, IMAGE or UNITEXT data
  type.
• 1> alter table t_text_alter modify b text null
  2> go
  Msg 13907, Level 16, State 1:
  Server 'ASE', Line 1:
  ALTER TABLE 't_text_alter' failed. You cannot modify column 'b' to
  TEXT/IMAGE/UNITEXT type.
  Msg 11050, Level 16, State 51:
  Server 'ASE', Line 1:
  Adaptive Server cannot process this ALTER TABLE statement due to one or more
  preceding errors. If there are no preceding errors, please contact Sybase Technical Support.

• Adaptive Server Enterprise (ASE)
• Dataserver

Msg 1919, Level 16, State 1, Msg 13907, Text, Unitext, Image, datatype, column , KBA , BC-SYB-ASE , Sybase ASE Database Platform (non Business Suite) , BC-SYB-REP , Sybase Replication Server (standalone) , How To