Key Fraud Indicator is a significant red flag that suggests possible fraud or deliberate misrepresentation in a credit case. In MSME lending, fraud indicators can arise from fake documents, inflated invoices, mismatched GST and bank data, circular transactions, shell customers, forged collateral papers, identity misuse, or suspicious related-party dealings. For example, repeated sales credits from connected entities followed by immediate cash withdrawals may need deeper investigation. This indicator matters because fraud risk can cause loss even when financial ratios appear acceptable. It should trigger enhanced due diligence, verification, escalation, or hold on disbursement depending on severity. The common caution is to distinguish fraud indicators from ordinary operational errors, but never ignore a material red flag without documented resolution.