-314 THE STATEMENT CONTAINS AN AMBIGUOUS HOST VARIABLE REFERENCE

Explanation
 A host variable used in the statement has been
defined more than once in this application program causing confusion
as to which host variable defined should be used.

System action
 The statement cannot be processed.

Programmer response
 Make the host variable unique or use qualifications
to indicate which host variable definition is to be used.

SQLSTATE
 42714 