Cause
you tried to create an index on a table with an illegal primary key datatype
you tried to create an index on a table with an illegal primary key datatype
change the textkey to one of the followings: VARCHAR2, NUMBER, VARCHAR, DATE, CHAR, MLSLABEL
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/drgus.htm
https://community.oracle.com/message/10465199
Browse all solutions to database errors from Oracle, MS SQL, or MySQL