Exam CISA topic 1 question 659 discussion

An organization was recently notified by its regulatory body of significant discrepancies in its reporting data. A preliminary investigation revealed that the discrepancies were caused by problems with the organization's data quality. Management has directed the data quality team to enhance their program. The audit committee has asked internal audit to be advisors to the process. To ensure that management concerns are addressed, which data set should internal audit recommend be reviewed FIRST?