Error 1904
Severity Level 16
Message Text
Cannot specify more than %d column names for statistics or index key list. %d specified.
Explanation
This error occurs when more than 16 columns are used to create a composite index. A composite index is an index that uses from 2 to 16 columns.
The following example shows a composite index using objects from the pubs database:
USE pubs
GO
CREATE INDEX idxPubNameCity
ON publishers (pub_name, city)
GO
Action
Modify the CREATE INDEX statement to use no more than 16 columns. For more information, see CREATE INDEX.