3516 More than one primary index or primary key specified.
Tables can have only one primary index and one primary key. The user can add a primary key if and only if there's not already a primary key exist in table.
Decide which index will be the primary index. The other indexes can be redefined as secondary. Resubmit the request. In the case of a primary key, the user must take either of the following steps: <1> If the current primary key is mapped to an unique secondary index then drop the primary key using DROP INDEX and resubmit the request. <2> If the current primary key is mapped to an unique primary index then define this index as an unique secondary index using CREATE INDEX statement.