What is the best method for verifying that the correct version of a data file was used for a production run?

Verifying that the correct version of a data file was used for a production run is critical to ensuring data integrity and accurate processing outcomes. System logs serve as a comprehensive record of the various operations performed by the system, including loading data files, executing jobs, and any changes made during the process. By examining system logs, one can track when and which data files were accessed, thereby confirming that the appropriate version was utilized for the production run.

Operator problem reports, while informative regarding issues encountered, do not specifically indicate the versions of files used. Operator work schedules provide information about which operators are on duty but lack relevance to the file version verification. Output distribution reports detail the results of the production run but do not provide insights into the specific source files used, which makes them less effective for the purpose of confirming the file version.