The Audit functionality in Usage Engine enables gathering of exact processing metrics in batch workflows. A user defines customized database tables where audit data is saved by Usage Engine every time a file has been processed successfully. The only requirement for these audit database tables, is that they contain a column reserved for file identification. Examples of typical audit counters/metrics; number of specific records collected, forwarded, cloned, deleted, sent to error correction system, correlated, aggregated, etc. Also, size and time stamp of files collected, discarded, and forwarded is typically saved. 

Usage Engine Auditing 

Note that audit is exact metrics and can thus only be applied to batch workflows. If audit for real-time workflows is required, you need to forward data from the real-time workflow to a batch workflow.