The ISAM processor has been asked to operate on a file in a way that is incompatible with an audit trail, yet an audit trail exists for the file. For C-ISAM programs, you cannot call iscluster while an audit trail exists. First call isaudit with the AUDSTOP mode. For SQL products, you cannot create a clustered index on a table while it has an audit trail. First use the DROP AUDIT statement to drop the audit trail.