This statement may not be prepared with a context structure

  Explanation:  A PREPARE or EXECUTE IMMEDIATE with an embedded
  USING CONTEXT clause or in a module language procedure with a
  context parameter was passed a statement which may not be
  prepared with a context structure.

  User Action:  If you are using a precompiled program, remove the
  USING CONTEXT clause.  If you are calling a module language
  procedure, either remove the procedure name from the
  /CONTEXT=(...) list or, if /CONTEXT=ALL is used, pass a zero as
  the address of the context structure or fill the distributed TID
  portion of the context structure with zeroes.