Cause
you tried to use the detail datastore to index a table with no primary key constraint
you tried to use the detail datastore to index a table with no primary key constraint
add a primary key constraint on the table
Try the following links for this error:
http://docs.oracle.com/cd/E16655_01/server.121/e26079/drgus.htm
https://community.oracle.com/message/11001629
https://community.oracle.com/message/11001593
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