I have been thinking about a data reconciliation product for financial services companies and other domains as well.
With literally thousand of companies integrating multiple fintech services like payment gateway, payout products, card issuance, and open banking, the data of all financial products is usually disjointed in the company with no clear visibility.
A data recon product ideally just matches the incoming and outgoing payments in a company and reports any anomalies and differences.
Does anyone has any experience with any reconciliation problem in your company? I would love to know more about the details of your problem in specific.